Johns Hopkins University is a Clinical Pathology/Laboratory Medicine Physician (organization) practicing in Baltimore, Maryland. The National Provider Identifier (NPI) is #1093674442, which was assigned on January 21, 2026, and the registration record was last updated on January 21, 2026. The practitioner's main practice location is at 4940 Eastern Ave, Baltimore, MD 21224-2735; the contact telephone number is 4105500100. The primary taxonomy of Johns Hopkins University is Clinical Pathology/Laboratory Medicine Physician (207ZP0105X), with specialization in Clinical Pathology/Laboratory Medicine. The authorized official for Johns Hopkins University is Nicholas Giarratano (Director, Provider Enrollment).
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
| NPI | 1093674442 |
| Entity Type | Organization |
| Organization Name | JOHNS HOPKINS UNIVERSITY |
| Provider Name | JOHNS HOPKINS UNIVERSITY |
| Practice Address |
4940 Eastern Ave Baltimore MD 21224-2735 |
| Practice Telephone | 4105500100 |
| Mailing Address |
6201 Greenleigh Ave Middle River MD 21220-2004 |
| Mailing Telephone | 4109330000 |
| Mailing Fax Number | 4105004266 |
| Certification Date | 2026-01-21 |
| Enumeration Date | 2026-01-21 |
| Last Update Date | 2026-01-21 |
| Is Organization Subpart | N |
| Official Name | NICHOLAS GIARRATANO |
| Official Title | DIRECTOR, PROVIDER ENROLLMENT |
| Telephone | 4109330000 |
| Primary | Code | Classification | Specialization | Taxonomy Group | License Number | License State |
|---|---|---|---|---|---|---|
| Y | 207ZP0105X | Pathology | Clinical Pathology/Laboratory Medicine | 193200000X MULTI-SPECIALTY GROUP |
| Other Organization Name | Type |
|---|---|
| JHU - 4940 EASTERN AVE- PROVIDER TYPE: 10 -LAB | Doing Business As Name |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Johns Hopkins University | 1501 S Clinton St Ste 200, Baltimore, MD 21224-5748 | Internal Medicine Physician | 2026-03-04 |
| Johns Hopkins University | 8115 Maple Lawn Blvd, Fulton, MD 20759-2681 | Internal Medicine Physician | 2026-04-06 |
| Johns Hopkins University | 5215 Loughboro Rd Nw Ste 200, Washington, DC 20016-2625 | Durable Medical Equipment & Medical Supplies | 2026-04-03 |
| Johns Hopkins University | 251 E Antietam St, Hagerstown, MD 21740-5724 | Internal Medicine Physician | 2026-04-06 |
| Johns Hopkins University | 5961 Exchange Dr, Eldersburg, MD 21784-9253 | Internal Medicine Physician | 2026-04-06 |
| Johns Hopkins University | 200 N Wolfe St, Baltimore, MD 21287-0011 | Mental Health Counselor | 2026-03-04 |
| Johns Hopkins University | 1717 E Monument St Bldg Ground, Baltimore, MD 21287-0027 | Mental Health Counselor | 2026-03-04 |
| Johns Hopkins University | 4924 Campbell Blvd Ste 130, Nottingham, MD 21236-5912 | Podiatrist | 2026-03-04 |
| Johns Hopkins University | 8820 Columbia 100 Pkwy, Columbia, MD 21045-2163 | Internal Medicine Physician | 2026-04-06 |
| Johns Hopkins University | 620 Boulton St, Bel Air, MD 21014-4255 | Ophthalmology Physician | 2026-03-04 |
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| Code | 207ZP0105X |
| Taxonomy | Clinical Pathology/Laboratory Medicine Physician |
| Classification | Pathology |
| Specialization | Clinical Pathology/Laboratory Medicine |
| Grouping | Allopathic & Osteopathic Physicians |
| Definition: A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease. |
| Notes: Source: American Board of Medical Specialties, 2007. www.abms.org [7/1/2007: definition added, source added; 7/1/2011: modified source] Additional Resources: American Board of Pathology, 2007. http://www.abpath.org/. American Osteopathic Board of Pathology, 2007. http://www.osteopathic.org/certification Board certification for Medical Doctors (MDs) is provided by the American Board of Pathology. Board certification for Doctors of Osteopathy (DOs) is provided by the American Osteopathic Board of Pathology. |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Rocky Mountain Clinics LLC | 2400 Midpoint Dr Ste 170, Fort Collins, CO 80525-4413 | Clinical Pathology/Laboratory Medicine Physician | 2022-12-29 |
| Jane Moon Yang | 413 North Ave, Weston, MA 02493-1834 | Clinical Pathology/Laboratory Medicine Physician | 2025-12-01 |
| Lakshmanan Suresh | 55 Amherst Villa Rd, Buffalo, NY 14225-1400 | Clinical Pathology/Laboratory Medicine Physician | 2026-03-17 |
| St Paul Place Specialists, Inc. | 345 St Paul Place, Baltimore, MD 21202-2123 | Clinical Pathology/Laboratory Medicine Physician | 2025-10-07 |
| Immunity Care LLC | 750 Main St Fl 2, Reisterstown, MD 21136-2515 | Clinical Pathology/Laboratory Medicine Physician | 2025-10-21 |
| D'Asia B Ward | 221 6th Ave N, Texas City, TX 77590-7728 | Clinical Pathology/Laboratory Medicine Physician | 2025-07-28 |
| Blood Associates LLC | 2109 Ella Lane, Carrollton, TX 75010 | Clinical Pathology/Laboratory Medicine Physician | 2026-03-20 |
| Northwest Pathology PLLC | 3548 Meridian St Ste 101, Bellingham, WA 98225-1710 | Clinical Pathology/Laboratory Medicine Physician | 2020-11-09 |
| Los Palos Gastroenterology Specialists Inc | 1083 Los Palos Dr, Salinas, CA 93901-3916 | Clinical Pathology/Laboratory Medicine Physician | 2015-12-10 |
| Nada Naiyer | 35 Michigan St Ne Ste 6330, Grand Rapids, MI 49503-2530 | Clinical Pathology/Laboratory Medicine Physician | 2018-03-28 |
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| Street Address |
4940 EASTERN AVE |
| City | BALTIMORE |
| State | MD |
| Zip Code | 21224-2735 |
| Country | US |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Johns Hopkins University | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Optometrist | 2025-11-13 |
| Johns Hopkins University | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Speech-Language Pathologist | 2025-11-13 |
| Caline Azzi | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Diagnostic Radiology Physician | 2024-05-01 |
| Eric Jonathan Dayts | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Student in an Organized Health Care Education/Training Program | 2026-03-23 |
| Anushka Mazumdar | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Student in an Organized Health Care Education/Training Program | 2026-03-27 |
| Lisa Myers Grubb | 4940 Eastern Ave, Baltimore, MD 21224-2780 | Wound Care Registered Nurse | 2025-12-23 |
| Catherine Elizabeth Rickrode | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Clinical Social Worker | 2026-01-09 |
| Desiree Lejano | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Student in an Organized Health Care Education/Training Program | 2026-03-24 |
| Manotri Chaubal | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Student in an Organized Health Care Education/Training Program | 2026-03-30 |
| David Orlando Acero Garces | 4940 Eastern Ave, Baltimore, MD 21224-2735 | Student in an Organized Health Care Education/Training Program | 2026-03-27 |
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| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Peter Maciver | 156 N Lakewood Ave, Baltimore, MD 21224-1143 | Clinical Psychologist | 2024-07-22 |
| Autumn Pathways Inc | 101 N Haven St, Third Floor Ste N, Baltimore, MD 21224 | Home Health Agency | 2025-08-28 |
| Latoya Jones White | 2323 Orleans St, Baltimore, MD 21224-1020 | Family Nurse Practitioner | 2015-12-30 |
| Huckleberry Wellness | 2320 E Baltimore St, Baltimore, MD 21224-1031 | Clinical Social Worker | 2025-08-29 |
| Maria Jeanette Daza Pahilanga · Maria Pahilanga | 5505 Hopkins Bayview Circle, Baltimore, MD 21224 | Psychiatric/Mental Health Nurse Practitioner | 2025-06-10 |
| Mansoor Ahmed Malik | Johns Hopkins Bayview, 4940 Eastern Avenue, Alpha Commons 4th Floor, Baltimore, MD 21224 | Psychiatry Physician | 2006-06-12 |
| Nadiya Huber | 3717 Boston Street, Suite 393, Baltimore, MD 21224 | Behavior Technician | 2025-08-18 |
| Anne Gillian Freedman | 18 N Milton Ave, Baltimore, MD 21224-1046 | Student in an Organized Health Care Education/Training Program | 2026-03-20 |
| Antoinette Tanicky Whitaker | Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, Baltimore, MD 21224 | Nurse's Aide | 2025-08-11 |
| Community Wellness Psychiatric Rehabilitation Program LLC | 3310 Eastern Avenue, 1st Floor, Baltimore, MD 21224 | Mental Health Clinic/Center (Including Community Mental Health Center) | 2014-01-03 |
| Find all providers in the same zip code | |||
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Johns Hopkins Regional Physicians LLC | 11085 Little Patuxent Pkwy Ste 245, Columbia, MD 21044-2983 | Audiologist | 2025-10-23 |
| Johns Hopkins Community Physicians, Inc | 600 N Wolfe St, Baltimore, MD 21287-0005 | Internal Medicine Physician | 2019-04-05 |
| Johns Hopkins Community Physicians, Inc | 5901 Holabird Ave Ste A, Baltimore, MD 21224-6015 | Geriatric Medicine (Internal Medicine) Physician | 2025-10-21 |
| Johns Hopkins Regional Physicians LLC | 600 N Wolfe St, Baltimore, MD 21287-0005 | Allergy & Immunology Physician | 2024-03-20 |
| Johns Hopkins Community Physicians, Inc | 600 N Wolfe St, Baltimore, MD 21287-0005 | Critical Care Medicine (Internal Medicine) Physician | 2006-07-18 |
| Johns Hopkins Regional Physicians LLC | 1630 Main St Ste 217, Chester, MD 21619-2793 | Internal Medicine Physician | 2025-10-30 |
| Johns Hopkins Bayview Med Ctr Inc | 1821 Portal St Ste B, Baltimore, MD 21224-6541 | Case Management Agency | 2007-06-29 |
| Johns Hopkins Community Physicians, Inc. | 600 N Wolfe St, Baltimore, MD 21287-0005 | Obstetrics & Gynecology Physician | 2008-01-24 |
| Johns Hopkins Regional Physicians LLC | 8180 Lark Brown Rd Ste 101, Elkridge, MD 21075-6425 | Internal Medicine Physician | 2025-10-23 |
| Johns Hopkins Regional Physicians LLC | 600 N Wolfe St, Baltimore, MD 21287-0005 | Clinical Cardiac Electrophysiology Physician | 2010-05-20 |
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This dataset includes over five million health care providers who are assigned National Provider Identifier (NPI) in the National Plan and Provider Enumeration System (NPPES), developed by the Centers for Medicare & Medicaid Services (CMS). Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under Health Insurance Portability and Accountability Act (HIPAA). Each provider is registered with the NPI, full name, status, address, taxonomy, other identifiers, etc.
| Subject | Transparency and Disclosure |
| Jurisdiction | Federal |
| Data Provider | National Plan and Provider Enumeration System (NPPES), by the Centers for Medicare & Medicaid Services (CMS) |
| Source | download.cms.gov |
The National Provider Identifier (NPI) is a Health Insurance Portability and Accountability Act (HIPAA) Administrative Simplification Standard. The NPI is a unique identification number for covered health care providers and all health plans and health care clearinghouses, who must use the NPIs in the administrative and financial transactions adopted under HIPAA. The NPI is a 10-position, intelligence-free numeric identifier (10-digit number). All health care providers who are HIPAA-covered entities, whether individuals or organizations, must get an NPI. A HIPAA-covered entity is a health care provider that conducts certain transactions in electronic form, or a health care clearinghouse, or a health plan (including commercial plans, Medicare, and Medicaid). Centers for Medicare & Medicaid Services (CMS) has developed the National Plan and Provider Enumeration System (NPPES) to assign unique identifiers to health care providers. The National Provider Indentifier (NPI) has been the standard identifier for all HIPAA-covered entities (health care providers) since May 23, 2007. Small health plans were required to obtain and use an NPI by May 23, 2008. This dataset includes over five million health care providers (individuals and organizations) who are assigned NPI. The provider data elements are disclosed to the public by the Centers for Medicare & Medicaid Services (CMS) under the Freedom of Information Act (FOIA), as listed in the NPPES Data Dissemination Notice (CMS-6060-N). The NPI final rules define the following elements which required to be disclosed as determined by Department of Health & Human Services (HHS): NPI, Entity Type, Provider Name, Credential, Business Mailing Address, Business Location Address, Healthcare Provider Taxonomy Code, Other Provider Identifier, Provider Enumeration Date, NPI Deactivation Date, Provider License Number, Authorized Official Name and Contact Information. |