Grant Neifeld, M.D.
NPI 1215900683 · Sports Medicine (Family Medicine) Physician · La Mesa, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Neifeld, M.D. is a Sports Medicine (Family Medicine) Physician provider in La Mesa, CA (NPI 1215900683).
Provider details
- NPI number
- 1215900683
- Entity type
- Individual
- Primary specialty
- Sports Medicine (Family Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A49419 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ipratropium Bromide | 20 | 15 |
| Furosemide | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-08
- Last updated
- 2021-12-08
Frequently asked questions
- What is Grant Neifeld's NPI number?
- Grant Neifeld's National Provider Identifier (NPI) is 1215900683, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Neifeld's specialty?
- Grant Neifeld is listed in the NPPES registry with a primary specialty of Sports Medicine (Family Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Grant Neifeld located?
- Grant Neifeld's practice location on file with NPPES is 8881 Fletcher Pkwy, La Mesa, CA 91942-3134.
- What is Grant Neifeld's phone number?
- The practice phone number listed in the NPPES registry for Grant Neifeld is (619) 460-3311.
- Does Grant Neifeld accept Medicare?
- Grant Neifeld is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Neifeld's NPI active?
- Yes — Grant Neifeld's NPI (1215900683) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.