Walter Nahm, M.D., PHD.
NPI 1467447284 · Dermatology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Nahm, M.D., PHD. is a Dermatology Physician provider in San Diego, CA (NPI 1467447284).
Provider details
- NPI number
- 1467447284
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PHD.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A78569 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
8,370 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 1,299 | $41 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 930 | $145 |
| Destruction of Precancer Skin Growth, 15 Or More Growths17004 | 861 | $198 |
| Destruction of Skin Growth, 15 Or More Growths17111 | 860 | $158 |
| Treatment of Inflammatory Skin Disease Using Laser, More Than 500.0 Sq Cm96922 | 643 | $275 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 490 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ciclopirox Olaminebrand: Ciclopirox | 389 | 182 |
| Metronidazole | 350 | 138 |
| Triamcinolone Acetonide | 188 | 94 |
| Doxycycline Monohydrate | 173 | 76 |
| Montelukast Sodium | 141 | 38 |
| Spironolactone | 135 | 28 |
| Tacrolimus | 115 | 48 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$504 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-19
- Last updated
- 2021-07-20
- Certified
- 2021-07-20
Frequently asked questions
- What is Walter Nahm's NPI number?
- Walter Nahm's National Provider Identifier (NPI) is 1467447284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Nahm's specialty?
- Walter Nahm is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Nahm located?
- Walter Nahm's practice location on file with NPPES is 7695 Cardinal Court, San Diego, CA 92123-3305.
- What is Walter Nahm's phone number?
- The practice phone number listed in the NPPES registry for Walter Nahm is (858) 278-8835.
- Does Walter Nahm accept Medicare?
- Walter Nahm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Nahm's NPI active?
- Yes — Walter Nahm's NPI (1467447284) is active in the NPPES registry as of the last update on 2021-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.