Daniel O Siegel is a Gastroenterology Physician practicing in Denver, Colorado. The National Provider Identifier (NPI) is #1174518344, which was assigned on September 14, 2005, and the registration record was last updated on September 11, 2025. The practitioner's main practice location is at 4500 E 9th Ave, #720 S, Denver, CO 80220; the contact telephone number is 3033553525, and the fax number is 3033550255. The primary taxonomy of Daniel O Siegel is Gastroenterology Physician (207RG0100X), with specialization in Gastroenterology. Daniel O Siegel is licensed to practice in the state of Colorado (#35377), Colorado (#35377).
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
| NPI | 1174518344 |
| Entity Type | Individual |
| Provider Name | DANIEL O SIEGEL |
| Gender | Male |
| Credential | MD |
| Practice Address |
4500 E 9th Ave #720 S Denver CO 80220 |
| Practice Telephone | 3033553525 |
| Practice Fax Number | 3033550255 |
| Mailing Address |
4500 E 9th Ave #720 S Denver CO 80220 |
| Mailing Telephone | 3033553525 |
| Mailing Fax Number | 3033550255 |
| Enumeration Date | 2005-09-14 |
| Last Update Date | 2025-09-11 |
| Is Sole Proprietor | N |
| PAC ID |
7113959982 Medicare Provider Enrollment and Chain/Ownership System (PECOS) Associate Control (PAC) ID |
| Full Name | DANIEL O SIEGEL |
| Medical School | ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI |
| Primary Specialty | INTERNAL MEDICINE |
| Organization Legal Name | DENVER DIGESTIVE HEALTH SPECIALISTS INC |
| Address |
4500 E 9th Ave 720s Denver CO 80220-3926 |
| Primary | Code | Classification | Specialization | Taxonomy Group | License Number | License State |
|---|---|---|---|---|---|---|
| N | 207R00000X | Internal Medicine | 35377 | CO | ||
| Y | 207RG0100X | Internal Medicine | Gastroenterology | 35377 | CO |
| Other Identifier | Issuing State | Issuer | Identifier Type |
|---|---|---|---|
| 01353770 | CO | MEDICAID |
| Code | 207RG0100X |
| Taxonomy | Gastroenterology Physician |
| Classification | Internal Medicine |
| Specialization | Gastroenterology |
| Grouping | Allopathic & Osteopathic Physicians |
| Definition: An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs. |
| Notes: Source: American Board of Medical Specialties, 2007. www.abms.org [7/1/2007: added definition, added source; 7/1/2011: modified source] Additional Resources: American Board of Internal Medicine, 2007. http://www.abim.org/. American Osteopathic Board of Internal Medicine, 2007. http://www.osteopathic.org/certification Board certification for Medical Doctors (MDs) is provided by the American Board of Internal Medicine. Board certification for Doctors of Osteopathy (DOs) is provided by the American Osteopathic Board of Internal Medicine. |
| Code | 207R00000X |
| Taxonomy | Internal Medicine Physician |
| Classification | Internal Medicine |
| Grouping | Allopathic & Osteopathic Physicians |
| Definition: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. |
| Notes: Source: American Board of Medical Specialties, 2007. www.abms.org [7/1/2007: added definition, added source; 7/1/2011: modified source] Additional Resources: American Board of Internal Medicine, 2007. http://www.abim.org/. American Osteopathic Board of Internal Medicine, 2007. http://www.osteopathic.org/certification Board certification for Medical Doctors (MDs) is provided by the American Board of Internal Medicine. Board certification for Doctors of Osteopathy (DOs) is provided by the American Osteopathic Board of Internal Medicine. |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Jayme Powers | 136 S Tamarak Cir, Lehi, UT 84043-2761 | Gastroenterology Physician | 2026-03-26 |
| Kenneth Shan Md Inc | 612 W Duarte Rd Ste 601, Arcadia, CA 91007-9240 | Gastroenterology Physician | 2026-03-12 |
| Lumen Medical Endoscopy LLC | 3808 Union St Ste 3n, Flushing, NY 11354-5670 | Gastroenterology Physician | 2026-04-06 |
| Gastro Swift PLLC | 6300 West Loop S, Bellaire, TX 77401-2900 | Gastroenterology Physician | 2026-04-07 |
| Gables Gastro PLLC | 420 S Dixie Hwy Ste 4e, Coral Gables, FL 33146-2232 | Gastroenterology Physician | 2026-02-17 |
| Craig R Gluckman, M.D., A Medical Corporation | 16661 Ventura Blvd Ste 818, Encino, CA 91436-1999 | Gastroenterology Physician | 2026-04-04 |
| Texas Gastroenterology Associates, PLLC | 17110 Dallas Pkwy Ste 100c, Dallas, TX 75248-1167 | Gastroenterology Physician | 2026-03-20 |
| Abington Memorial Hospital | 1235 Old York Rd Ste G20, Abington, PA 19001-3839 | Gastroenterology Physician | 2026-03-18 |
| Digestive Health La | 8631 W 3rd St Ste 1015, Los Angeles, CA 90048-5913 | Gastroenterology Physician | 2026-02-17 |
| Clearpath Digestive Health Inc | 21212 Northwest Fwy Ste 265, Cypress, TX 77429-5883 | Gastroenterology Physician | 2026-03-16 |
| Find all providers with the same taxonomy | |||
| Street Address |
4500 E 9TH AVE #720 S |
| City | DENVER |
| State | CO |
| Zip Code | 80220 |
| Country | US |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Marie Eddins Busovsky | 4500 E 9th Ave Ste 470, Denver, CO 80220-3923 | Obstetrics & Gynecology Nurse Practitioner | 2022-01-28 |
| Comprehensive Endocrinology, P.C. | 4500 E 9th Ave Ste 170, Denver, CO 80220-3932 | Endocrinology, Diabetes & Metabolism Physician | 2007-12-27 |
| Daniel H Jacobson | 4500 E 9th Ave, Denver, CO 80220-3912 | Obstetrics & Gynecology Physician | 2006-11-08 |
| Mark A Linkow | 4500 E 9th Ave, Ste 720s, Denver, CO 80220-3900 | Internal Medicine Physician | 2005-09-07 |
| Eugene Mark Rosenthall | 4500 E 9th Ave, Suite 510, Denver, CO 80220-3900 | Podiatrist | 2005-07-12 |
| Alyssa Melber | 4500 E 9th Ave Ste 300, Denver, CO 80220-3922 | Pediatrics Physician | 2020-04-06 |
| Craig Murk | 4500 E 9th Ave Ste 150, Denver, CO 80220-3932 | Internal Medicine Physician | 2021-03-24 |
| Claudia I Panzer | 4500 E 9th Ave Ste 170, Denver, CO 80220-3932 | Endocrinology, Diabetes & Metabolism Physician | 2006-04-07 |
| Mckenna Kelly | 4500 E 9th Ave, Denver, CO 80220-3912 | Obstetrics & Gynecology Physician | 2021-04-13 |
| Emily Nicole Schneider-Bruch | 4500 E 9th Ave, Denver, CO 80220-3912 | Obstetrics & Gynecology Physician | 2009-04-06 |
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| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Halo Secure Transportation LLC | 4230 E Colfax Ave, Denver, CO 80220-1006 | Secured Medical Transport (VAN) | 2025-09-18 |
| Kyla Mchenry | 6260 E Colfax Ave, Denver, CO 80220-1515 | Dentist | 2023-08-21 |
| Megan Roessler | 6260 E Colfax Ave, Denver, CO 80220-1515 | Social Worker | 2025-08-22 |
| Morgan Taylor Cwieka | 6260 E Colfax Ave, Denver, CO 80220-1515 | Clinical Social Worker | 2024-02-27 |
| Elizabeth Belton | 4353 E Colfax Ave, Denver, CO 80220-1115 | Registered Nurse | 2014-06-25 |
| Madison Kay | 4353 E Colfax Ave, Denver, CO 80220-1115 | Clinical Social Worker | 2021-05-06 |
| Sara Bell | 6260 E Colfax Ave, Denver, CO 80220-1515 | Social Worker | 2025-11-14 |
| Cherished Empowerment Services | 1901 Eudora St, Denver, CO 80220-1252 | Clinical Social Worker | 2025-06-11 |
| Kelli Clark | 6260 E Colfax Ave, Denver, CO 80220-1515 | Social Worker | 2025-08-20 |
| Amelia Lynn Stoll | 6260 E Colfax Ave, Denver, CO 80220-1515 | Clinical Social Worker | 2019-11-27 |
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| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Sky Siegel | 1200 Concord Ave Ste 185, Concord, CA 94520-5006 | Behavior Technician | 2025-10-23 |
| Jordan R Siegel | 804 Pershing Dr Ste 102, Silver Spring, MD 20910-4436 | Endodontist | 2019-06-20 |
| Stephen J Siegel | 70 Shunpike Rd, Cromwell, CT 06416 | Family Medicine Physician | 2006-06-27 |
| Drs. Savoy & Siegel LLC | 127 Newark Ave, Jersey City, NJ 07302 | Optometrist | 2006-11-02 |
| Rachel Siegel | 6120 Kingsbury Ave, Saint Louis, MO 63112-1102 | Clinical Social Worker | 2026-01-05 |
| Samantha Siegel | 5820 E W T Harris Blvd Ste 109, #233, Charlotte, NC 28215 | Registered Dietitian | 2025-08-19 |
| Amy Siegel | 5960 Fairview Rd Ste 102, Charlotte, NC 28210-3111 | Psychologist | 2021-05-24 |
| Ava Siegel | 330 Brookline Ave, Boston, MA 02215-5491 | Student in an Organized Health Care Education/Training Program | 2026-03-30 |
| Deasina Siegel | 27777 Inkster Rd, Farmington Hills, MI 48334-5310 | Behavior Technician | 2025-09-03 |
| Paul D Siegel | 219 N Broad St, 9th Fl, Philadelphia, PA 19107-1519 | Pulmonary Disease Physician | 2006-06-14 |
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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. |