John D. Mahoney, M.D.
Internal Medicine Physician · Westminster, CO
John D. Mahoney, M.D. is an internal medicine physician with a practice address in Westminster, Colorado, and NPI 1730223512, issued on Feb 16, 2007. Check the license (Colorado 30667, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- John D. Mahoney
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 30667 CO
Self-reported in NPPES; status is on the state search - Practice location
- 11245 Huron St, Westminster, CO 80234
- Phone
- (303) 338-4545
- Enumerated
- Feb 16, 2007
- Record last updated
- Jun 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 01306679 CO
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 11245 Huron St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maricelle AbrenaPharmacist1902234990
- Kim Adams, RNAmbulatory Care Registered Nurse1922351535
- Brian Ahlstrand, M.D.Internal Medicine Physician1487920690
- Geraldine AmadorNurse's Aide1700913787
- Stephanie Ambach, DOObstetrics & Gynecology Physician1710555198
- Kim Anderson, KIM ANDERSON RNPediatric Registered Nurse1003147984
Verify John D. Mahoney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 30667Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average internal medicine physician in 2024
976 Medicare Part D claims for 459 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Meloxicam64 claims
- Amoxicillin-Clavulanate Potass55 claims
- Alvesco47 claims
- Albuterol Sulfate Hfa46 claims
- Prednisone44 claims
- Gabapentin35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John D. Mahoney among 2,046 internal medicine physician records in Colorado
John D. Mahoney, M.D. 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. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 39% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2021 · 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).
42 internal medicine physician records list a practice address in Westminster
They are 42 of the 2,492 NPPES records with a practice address in Westminster, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Westminster → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Brian Ahlstrand, M.D.Westminster, CO 802341487920690
- Joanna Culver, MDWestminster, CO 802341356753511
- Emma Foraker, MDWestminster, CO 802341548766579
- James Hardee, MDWestminster, CO 802341134256720
- Gayle HutchinsonWestminster, CO 802341366572117
- Daniel McAninch, MDWestminster, CO 802341962539940
- Ben Mendoza, M.D.Northglenn, CO 802341285955534
- Renee Micielli, MDWestminster, CO 802341134248545
Common questions
What is John D. Mahoney, M.D.'s NPI number?
John D. Mahoney, M.D.'s National Provider Identifier (NPI) is 1730223512, issued on Feb 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John D. Mahoney, M.D. located?
The NPPES record lists a practice address at 11245 Huron St, Westminster, CO, 80234. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify John D. Mahoney, M.D.'s license?
NPPES lists Colorado license number 30667, 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.
How much does John D. Mahoney, M.D. prescribe under Medicare Part D?
In 2024, John D. Mahoney, M.D. had 976 Medicare Part D claims for 459 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.