NPPES file of Aug 9, 2026

William F. Fell, MD

Internal Medicine Physician · Aurora, CO

William F. Fell, MD is an internal medicine physician with a practice address in Aurora, Colorado, and NPI 1912994435, issued on Sep 29, 2005. Check the license (Colorado 17471, as entered in NPPES) on the Colorado Medical Board; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912994435
Name
William F. Fell
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
17471 CO
Self-reported in NPPES; status is on the state search
Practice location
1421 S Potomac St, Aurora, CO 80012
Phone
(303) 872-3914
Enumerated
Sep 29, 2005
Record last updated
Aug 21, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(720) 535-4832
Medicaid ID
01174713 CO
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →

Also registered at 1421 S Potomac St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dennis Battock, M.D.Cardiovascular Disease Physician1083600928
  2. Courtney Dunson, LPCMental Health Counselor1801398649
  3. Jay Dworkin DpmFoot & Ankle Surgery Podiatrist1508938432
  4. Amanda Edmiston, LSWClinical Social Worker1548906720
  5. Callie Gummow, MA, LPCProfessional Counselor1134719305
  6. Jill Hulbert, N.P.Nurse Practitioner1164419800

Verify William F. Fell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license 17471    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Colorado license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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William F. Fell among 2,046 internal medicine physician records in Colorado

William F. Fell, MD is one of 2,046 internal medicine physician records with a practice address in Colorado. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileNo · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 53% of these records are
  • Record last updated2014 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

244 internal medicine physician records list a practice address in Aurora

They are 244 of the 17,400 NPPES records with a practice address in Aurora, and 2,046 internal medicine physician records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,046 in Colorado → Every provider in Aurora → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Stephen Alix, M.D.Aurora, CO 800121063473361
  2. Douglas Altschuler, DOAurora, CO 800121770542177
  3. David Baez, MDAurora, CO 800121407896830
  4. Michael Barlow, M.D.Aurora, CO 800121598750283
  5. Gordon Deagman, M.D.Aurora, CO 800121346235439
  6. Shabana Jiwani, M.D.Aurora, CO 800121609829365
  7. Danilo Mazzella, MDAurora, CO 800121265463756
  8. Thomas Mohr, D.O.Aurora, CO 800121447287537

Common questions

What is William F. Fell, MD's NPI number?

William F. Fell, MD's National Provider Identifier (NPI) is 1912994435, issued on Sep 29, 2005. An NPI identifies a provider in billing; it is not a license.

Where is William F. Fell, MD located?

The NPPES record lists a practice address at 1421 S Potomac St, Aurora, CO, 80012. Phone: (303) 872-3914. Providers update this record themselves, so call before visiting.

How can I verify William F. Fell, MD's license?

NPPES lists Colorado license number 17471, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.