William Martin, M.D.
NPI 1871529677 · Physical Medicine & Rehabilitation Physician · La Selva Beach, CA
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Martin, M.D. is a Physical Medicine & Rehabilitation Physician provider in La Selva Beach, CA (NPI 1871529677).
Provider details
- NPI number
- 1871529677
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G62363 (CA)
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
20 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
1,479 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) |
|---|---|---|
| Continuous Intraoperative Neurophysiology Monitoring, From Outside the Operating Room (remote Or Nearby), Per Patient, (attention Directed Exclusively to One Patient) Each 15 Minutes (list in Addition to Primary Procedure)G0453 | 1,131 | $34 |
| Needle Measurement of Electrical Activity in Arm, Leg, Trunk Or Head Muscles, Limited Study95870 | 174 | $21 |
| Placement of Skin Electrodes and Measurement of Stimulated Sites on Arms and Legs95938 | 120 | $49 |
| Placement of Skin Electrodes and Measurement of Central Motor Stimulation in Arms and Legs95939 | 54 | $128 |
Typical Medicare-allowed amounts for these services range $21–$128 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-23
- Last updated
- 2025-03-14
- Certified
- 2025-03-14
Frequently asked questions
- What is William Martin's NPI number?
- William Martin's National Provider Identifier (NPI) is 1871529677, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Martin's specialty?
- William Martin is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is William Martin located?
- William Martin's practice location on file with NPPES is 265 Camino Al Barranco, La Selva Beach, CA 95076-1505.
- What is William Martin's phone number?
- The practice phone number listed in the NPPES registry for William Martin is (831) 331-6239.
- Does William Martin accept Medicare?
- William Martin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Martin's NPI active?
- Yes — William Martin's NPI (1871529677) is active in the NPPES registry as of the last update on 2025-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.