Michael B. Keller, M.D.
Family Medicine Physician · Denver, CO
Michael B. Keller, M.D. is a family medicine physician with a practice address in Denver, Colorado, and NPI 1114061728, issued on Feb 16, 2007. Check the license (Colorado 38238, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael B. Keller
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 38238 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1700 Marion Street, Denver, CO 80218
- Phone
- (303) 830-6666
- Enumerated
- Feb 16, 2007
- Record last updated
- Nov 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (303) 830-7099
- Medicaid ID
- 62233327 CO
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 1700 Marion Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Deaun Gehring, MDFamily Medicine Physician1568477420
- Neil Sullivan, M.D.Family Medicine Physician1518002187
Verify Michael B. Keller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 38238Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 97% of the cost of the top drugs
1,047 Medicare Part D claims for 232 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims. 60 claims were for opioids.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Shingrix66 claims
- Abrysvo64 claims
- Mresvia46 claims
- Rosuvastatin Calcium41 claims
- Amlodipine Besylate33 claims
- Levothyroxine Sodium32 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.
Industry payments in 2024: $154.72
4 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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.
Michael B. Keller among 3,563 family medicine physician records in Colorado
Michael B. Keller, M.D. 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 42% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2013 · 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).
457 family medicine physician records list a practice address in Denver
They are 457 of the 25,068 NPPES records with a practice address in Denver, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Denver → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Bradley Alger, M.D.Denver, CO 802181992849541
- Sally Berger, M.D.Denver, CO 802181306997135
- Jan Douglas, M.D.Denver, CO 802181942266291
- Barbara Ferguson, M.D.Denver, CO 802181760521561
- Deaun Gehring, MDDenver, CO 802181568477420
- Ellice Goldberg, DODenver, CO 802181972618510
- David Hnida, DODenver, CO 802181366543878
- Roy Jared, MDDenver, CO 802181881641298
Common questions
What is Michael B. Keller, M.D.'s NPI number?
Michael B. Keller, M.D.'s National Provider Identifier (NPI) is 1114061728, issued on Feb 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael B. Keller, M.D. located?
The NPPES record lists a practice address at 1700 Marion Street, Denver, CO, 80218. Phone: (303) 830-6666. Providers update this record themselves, so call before visiting.
How can I verify Michael B. Keller, M.D.'s license?
NPPES lists Colorado license number 38238, 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 Michael B. Keller, M.D. prescribe under Medicare Part D?
In 2024, Michael B. Keller, M.D. had 1,047 Medicare Part D claims for 232 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.