Grant Barrie Neifeld, M.D.
Sports Medicine (Family Medicine) Physician · La Mesa, CA
Grant Barrie Neifeld, M.D. is a sports medicine (family medicine) physician with a practice address in La Mesa, California, and NPI 1215900683, issued on Feb 8, 2006. Check the license (California A49419, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Grant Barrie Neifeld
- Credential
- M.D.
- Primary taxonomy
- Sports Medicine (Family Medicine) Physician 207QS0010X
- License number
- A49419 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8881 Fletcher Pkwy, La Mesa, CA 91942
- Phone
- (619) 460-3311
- Enumerated
- Feb 8, 2006
- Record last updated
- Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- ZZZ36915Z CA
- Medicare enrollment
- Enrolled (PECOS I20080611000712); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest sports medicine (family medicine) physician records → All 266 in California → Look up another NPI →
Also registered at 8881 Fletcher Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan Dealy, CPNPNurse Practitioner1285722843
Verify Grant Barrie Neifeld in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A49419Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average sports medicine (family medicine) physician in 2024
131 Medicare Part D claims for 75 beneficiaries, against an average of 855 among the 2,237 providers of this specialty who prescribed in Part D.
Most prescribed
- Ipratropium Bromide20 claims
- Furosemide12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grant Barrie Neifeld among 266 sports medicine (family medicine) physician records in California
Grant Barrie Neifeld, M.D. is one of 266 sports medicine (family medicine) physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 73% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1976 · median 2012 among the 190 with a school on file
- Record last updated2021 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QS0010X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sports Medicine (Family Medicine) Physician providers in California
There are 266 sports medicine (family medicine) physician records in California.
All 266 in California → Every provider in La Mesa → Sports Medicine (Family Medicine) Physician nationwide →
The 8 sports medicine (family medicine) physician records with the nearest ZIP codes
- Ravishankar Rao, M.D.La Mesa, CA 919421154617306
- Charles Camarata, MDChula Vista, CA 919101316106396
- Rudolph-Bear Gamboa, M.D.Chula Vista, CA 919101902847932
- Tom BolgerLa Jolla, CA 920371659261758
- Mark CinqueLa Jolla, CA 920371114423969
- Bahrom Firozgary, MDLa Jolla, CA 920371215590070
- Laika Nur, M.D.La Jolla, CA 920371972034890
- Timothy Taylor, D.O.Oceanside, CA 920541437546512
Common questions
What is Grant Barrie Neifeld, M.D.'s NPI number?
Grant Barrie Neifeld, M.D.'s National Provider Identifier (NPI) is 1215900683, issued on Feb 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Grant Barrie Neifeld, M.D. located?
The NPPES record lists a practice address at 8881 Fletcher Pkwy, La Mesa, CA, 91942. Phone: (619) 460-3311. Providers update this record themselves, so call before visiting.
How can I verify Grant Barrie Neifeld, M.D.'s license?
NPPES lists California license number A49419, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grant Barrie Neifeld, M.D. prescribe under Medicare Part D?
In 2024, Grant Barrie Neifeld, M.D. had 131 Medicare Part D claims for 75 beneficiaries; the average among sports medicine (family medicine) physician prescribers was 855. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.