1. Home
  2. Directory
  3. California
  4. San Diego
  5. Dermatology
  6. NPI Profile

WALTER K NAHM MD PHD INC
NPI 1720110968
Dermatology - MOHS-Micrographic Surgery in San Diego, CA

Active since March 12, 2007
7695 CARDINAL CT, STE 200, SAN DIEGO, CA 92123(858) 278-8835(858) 386-4776 Get Directions Write a Review

NPPES record last updated: July 20, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Walter K Nahm Md Phd Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WALTER K NAHM MD PHD INC (NPI 1720110968) is a healthcare organization registered as a mohs-micrographic surgery in San Diego, California and active in the NPI registry since March 2007. The organization lists James Dabbs, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1720110968
Entity TypeOrganization
Primary Taxonomy207ND0101X
Legal Business NameWALTER K NAHM MD PHD INC
Location Address7695 CARDINAL CT, STE 200San Diego, CA 92123-3357
Mailing Address7695 Cardinal Ct, Ste 200San Diego, CA 92123-3357 · (858) 278-8835
Phone(858) 278-8835
Fax(858) 386-4776
Organization SubpartNo
Authorized OfficialJames DabbsOffice Manager · (858) 278-8835
Enumeration DateMarch 12, 2007
Last NPPES UpdateJuly 20, 2021
NPPES CertifiedJuly 20, 2021
✔ NPI 1720110968 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyDermatology · MOHS-Micrographic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207ND0101X
License✔ Licensed in CA · A78569
Definition
The highly-trained surgeons that perform Mohs Micrographic Surgery are specialists both in dermatology and pathology. With their extensive knowledge of the skin and unique pathological skills, they are able to remove only diseased tissue, preserving healthy tissue and minimizing the cosmetic impact of the surgery. Mohs surgeons who belong to the American College of Mohs Surgery (ACMS) have completed a minimum of one year of fellowship training at one of the ACMS-approved training centers in the U.S.
Also ListedDermatologyTaxonomy 207N00000X · License A78569 (CA)
Also ListedDermatology · Procedural DermatologyTaxonomy 207NS0135X · License A78569 (CA)
7695 CARDINAL CT, San Diego, CA 92123
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Walter K Nahm Md Phd Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Walter K Nahm MD Phd Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Walter Nahm, M.D., PHD.
Dermatology
NPI 1467447284
7695 CARDINAL COURT SUITE 200
San Diego, CA 92123
(858) 278-8835
✔ PECOS✔ Accepts MedicareSame address
Siavosh Vakilian, MD
Radiation Oncology
NPI 1427456151
3366 5TH AVE
San Diego, CA 92103
(619) 230-0400
✔ PECOS✔ Accepts Medicare3.5 mi
Tara Washington, MD
Radiation Oncology
NPI 1780621276
44274 GEORGE CUSHMAN CT SUITE 100
Temecula, CA 92592
(951) 252-9300
✔ PECOS✔ Accepts Medicare48 mi
Brian Ronson, MD
Radiation Oncology
NPI 1750364493
44274 GEORGE CUSHMAN CT STE 100
Temecula, CA 92592
(951) 252-9300
✔ PECOS✔ Accepts Medicare48 mi
James Mason, MD
Radiation Oncology
NPI 1902955818
36450 INLAND VALLEY DR
Wildomar, CA 92595
(951) 696-0679
✔ PECOS✔ Accepts Medicare55 mi
David Greene, M.D.
Radiation Oncology
NPI 1285600403
610 E ROMIE LN
Salinas, CA 93901
(858) 603-0172
✔ PECOS✔ Accepts Medicare369 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Walter K Nahm MD Phd Inc's NPI number?

The NPI number for Walter K Nahm MD Phd Inc is 1720110968. It was assigned to this organization in the NPPES registry on March 12, 2007.

Where is Walter K Nahm MD Phd Inc located?

Walter K Nahm MD Phd Inc is located at 7695 Cardinal Ct Ste 200, San Diego, CA 92123. The listed phone number is (858) 278-8835.

What is Walter K Nahm MD Phd Inc's specialty?

The primary specialty registered for this NPI is Dermatology, specializing in MOHS-Micrographic Surgery, with taxonomy code 207ND0101X.

Is Walter K Nahm MD Phd Inc enrolled in Medicare?

Yes. Walter K Nahm MD Phd Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Walter K Nahm MD Phd Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Walter K Nahm MD Phd Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Radiation Oncology (5) and Dermatology (1). Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Walter K Nahm MD Phd Inc was last updated on July 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.