Gregory S. Maeder, MD
Family Medicine Physician · Westminster, CO
Gregory S. Maeder, MD is a family medicine physician with a practice address in Westminster, Colorado, and NPI 1427387984, issued on Dec 12, 2009. Check the license (Colorado 47014, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory S. Maeder
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 47014 CO
Self-reported in NPPES; status is on the state search - Practice location
- 8510 Bryant St, Westminster, CO 80031
- Phone
- (303) 430-5560
- Enumerated
- Dec 12, 2009
- Record last updated
- Oct 25, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100817000327); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 8510 Bryant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mary Christenson, PTPhysical Therapist1528347192
- Jeremy Drechsler, D.O.Family Medicine Physician1780978429
- Marny Eulberg, MDFamily Medicine Physician1417968454
- Onna Klooster, FNPFamily Nurse Practitioner1013387851
Verify Gregory S. Maeder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 47014Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
62 Medicare Part D claims for 20 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $17.90
1 payment: food and beverage; the largest payer was RedDress USA, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Goodness Health, LLCDenver, CO
- Healogics Specialty Physicians OF Colorado-Professional LLCParker, CO
- Platte Valley Medical Group LLCBrighton, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory S. Maeder among 3,563 family medicine physician records in Colorado
Gregory S. Maeder, MD is one of 3,563 family medicine physician records with a practice address in Colorado. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 36% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2006 · median 2008 among the 2,077 with a school on file
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
192 family medicine physician records list a practice address in Westminster
They are 192 of the 2,492 NPPES records with a practice address in Westminster, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Westminster → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Karen Burnett, MDWestminster, CO 800311639254386
- Mark Engelstad, M.D.Westminster, CO 800311619914447
- Marny Eulberg, MDWestminster, CO 800311417968454
- Robert Hammond, MDWestminster, CO 800311295769354
- Sarah Liegl, M.D.Westminster, CO 800311376624114
- John Miller, MDWestminster, CO 800311770592701
- Carol Navsky, MDWestminster, CO 800311962490268
- Tracy Saffer, MDWestminster, CO 800311215982798
Common questions
What is Gregory S. Maeder, MD's NPI number?
Gregory S. Maeder, MD's National Provider Identifier (NPI) is 1427387984, issued on Dec 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Gregory S. Maeder, MD located?
The NPPES record lists a practice address at 8510 Bryant St, Westminster, CO, 80031. Phone: (303) 430-5560. Providers update this record themselves, so call before visiting.
How can I verify Gregory S. Maeder, MD's license?
NPPES lists Colorado license number 47014, 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 Gregory S. Maeder, MD prescribe under Medicare Part D?
In 2024, Gregory S. Maeder, MD had 62 Medicare Part D claims for 20 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.