Benjamin Alderfer, M.D.
NPI 1174620025 · Psychiatry Physician · Denver, CO
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Benjamin Alderfer, M.D. is a Psychiatry Physician provider in Denver, CO (NPI 1174620025).
Provider details
- NPI number
- 1174620025
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- DR-43637 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,405 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 389 | $77 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 332 | $117 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 317 | $63 |
| Therapy Using Electrical Currents90870 | 262 | $102 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 36 | $113 |
| Psychotherapy With Evaluation and Management Visit, 45 Minutes90836 | 35 | $80 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lorazepam | 35 | 15 |
| Lithium Carbonatebrand: Lithium Carbonate Er | 32 | 11 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 31 | 16 |
| Trazodone Hcl | 23 | 18 |
| Mirtazapine | 20 | — |
| Nortriptyline Hcl | 19 | — |
| Clonazepam |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2011-12-29
Frequently asked questions
- What is Benjamin Alderfer's NPI number?
- Benjamin Alderfer's National Provider Identifier (NPI) is 1174620025, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Benjamin Alderfer's specialty?
- Benjamin Alderfer is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Benjamin Alderfer located?
- Benjamin Alderfer's practice location on file with NPPES is 2525 S Downing St, Denver, CO 80210-5817.
- What is Benjamin Alderfer's phone number?
- The practice phone number listed in the NPPES registry for Benjamin Alderfer is (303) 765-6858.
- Does Benjamin Alderfer accept Medicare?
- Benjamin Alderfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Benjamin Alderfer's NPI active?
- Yes — Benjamin Alderfer's NPI (1174620025) is active in the NPPES registry as of the last update on 2011-12-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.