Grafton Prewett
NPI 1730684705 · Physical Medicine & Rehabilitation Physician · Grass Valley, CA
Enrolled with Medicare as Practitioner - Physical Therapist in Private Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grafton Prewett is a Physical Medicine & Rehabilitation Physician provider in Grass Valley, CA (NPI 1730684705).
Provider details
- NPI number
- 1730684705
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 294672 (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
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,494 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) |
|---|---|---|
| Therapy Procedure Using Functional Activities97530 | 2,226 | $30 |
| Therapy Procedure Using Manual Technique, Each 15 Minutes97140 | 189 | $21 |
| Evaluation for Physical Therapy, Typically 30 Minutes97162 | 79 | $100 |
Typical Medicare-allowed amounts for these services range $21–$100 (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
Additional practice locations (1)
- 68 Willow RdMenlo Park, CA 94025-3653Phone: (866) 839-6979
Registry dates
- Enumerated
- 2018-03-29
- Last updated
- 2019-08-13
Frequently asked questions
- What is Grafton Prewett's NPI number?
- Grafton Prewett's National Provider Identifier (NPI) is 1730684705, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grafton Prewett's specialty?
- Grafton Prewett is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is Grafton Prewett located?
- Grafton Prewett's practice location on file with NPPES is 300 Sierra College Dr Ste 165, Grass Valley, CA 95945-5083.
- What is Grafton Prewett's phone number?
- The practice phone number listed in the NPPES registry for Grafton Prewett is (530) 274-2320.
- Does Grafton Prewett accept Medicare?
- Grafton Prewett is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grafton Prewett's NPI active?
- Yes — Grafton Prewett's NPI (1730684705) is active in the NPPES registry as of the last update on 2019-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.