Benjamin Alderfer, M.D.
Psychiatry Physician · Denver, CO
Benjamin Alderfer, M.D. is a psychiatry physician with a practice address in Denver, Colorado, and NPI 1174620025, issued on Sep 20, 2006. Check the license (Colorado DR-43637, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Benjamin Alderfer
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- DR-43637 CO
Self-reported in NPPES; status is on the state search - Practice location
- 2525 S Downing St, Denver, CO 80210
- Phone
- (303) 765-6858
- Enumerated
- Sep 20, 2006
- Entity
- Type 1 · individual
Also registered at 2525 S Downing St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gwen Allen, RNMedical-Surgical Registered Nurse1285412239
- Madison Bassett, AGACNP-BCNurse Practitioner1548830466
- Connie Bassham, RN, CNSPsychiatric/Mental Health Registered Nurse1811134430
- John Batiuchok, MDPsychiatry Physician1184637761
- Jessica Batten, PAPhysician Assistant1235620402
- Dena BooeSurgical Technologist1205043734
Verify Benjamin Alderfer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR-43637Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
49% fewer Medicare Part D claims than the average psychiatry physician in 2024
514 Medicare Part D claims for 75 beneficiaries, against an average of 1,010 among the 32,287 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Lorazepam35 claims
- Lithium Carbonate Er32 claims
- Venlafaxine Hcl Er31 claims
- Trazodone Hcl23 claims
- Mirtazapine20 claims
- Clonazepam19 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.
The practice group's Medicare quality score for 2023: 77.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital or facility affiliation
- Portercare Adventist Health SystemDenver, CO
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
278 psychiatry physician records list a Denver practice address
They are 278 of the 25,068 NPPES records with a Denver practice address, and 954 psychiatry physician records in Colorado.
All 278 in Denver → All 954 in Colorado → Every provider in Denver →
Other psychiatry physician records in Colorado
- Ari Aal, DOBoulder, CO1689162596
- Ellen Aal, PMHNPBoulder, CO1942120043
- Alec Aaronson, DOAurora, CO1972065233
- Galia Abadi, M.D.Parker, CO1407051378
- Daniel Abrams, MDAurora, CO1780732214
- William Acosta, MDAurora, CO1821338393
- Frances Adachi, MD, MPHDenver, CO1114395241
- Alexis Adams, NPColorado Springs, CO1881373736
- Matthew Adamson, MD, PHDDenver, CO1033859087
- Malia Addison, MDLittleton, CO1043871320
Common questions
What is Benjamin Alderfer, M.D.'s NPI number?
Benjamin Alderfer, M.D.'s National Provider Identifier (NPI) is 1174620025, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Alderfer, M.D. located?
The NPPES record lists a practice address at 2525 S Downing St, Denver, CO, 80210. Phone: (303) 765-6858. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Alderfer, M.D.'s license?
NPPES lists Colorado license number DR-43637, 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 Benjamin Alderfer, M.D. prescribe under Medicare Part D?
In 2024, Benjamin Alderfer, M.D. had 514 Medicare Part D claims for 75 beneficiaries; the average among psychiatry physician prescribers was 1,010. Part D covers Medicare prescriptions only.
What is Benjamin Alderfer, M.D.'s Medicare quality score?
The 2023 MIPS final score is 77.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.