Christopher Gruber, M.D.
Family Medicine Physician · Mission Hills, CA
Christopher Gruber, M.D. is a family medicine physician with a practice address in Mission Hills, California, and NPI 1679743405, issued on Mar 7, 2008. Check the license (California A99001, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Gruber
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A99001 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15031 Rinaldi St, Mission Hills, CA 91345
- Phone
- (818) 639-4333
- Enumerated
- Mar 7, 2008
- Record last updated
- Sep 30, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (818) 639-4332
- Medicare enrollment
- Enrolled (PECOS I20081128000041); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 15031 Rinaldi St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marlyn Alejandro, P.T.Geriatric Physical Therapist1528265881
- Joanne Aquino, PA-CPhysician Assistant1740050012
- Brian Austin, PHARMDPharmacist1730022047
- Ali Azizi, M.D.Hospitalist Physician1225234529
- Lilit BazikyanFamily Nurse Practitioner1013840974
- Briana BegelferOccupational Therapist1174490205
Verify Christopher Gruber in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99001Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family medicine physician in 2024
438 Medicare Part D claims for 115 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Eliquis35 claims
- Pantoprazole Sodium21 claims
- Amlodipine Besylate18 claims
- Metoprolol Tartrate17 claims
- Azithromycin13 claims
- Levothyroxine Sodium13 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
- Providence Facey Medical FoundationMission Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Gruber among 17,133 family medicine physician records in California
Christopher Gruber, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2005 · median 2005 among the 10,652 with a school on file
- Record last updated2015 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
47 family medicine physician records list a practice address in Mission Hills
They are 47 of the 731 NPPES records with a practice address in Mission Hills, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Mission Hills → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Zinat Choudhury, MDMission Hills, CA 913451326084005
- Madhuri Desai, M.D.Mission Hills, CA 913451649245879
- Romila Devendra, MDMission Hills, CA 913451649247719
- Avinash Gururaja, MDMission Hills, CA 913451518990035
- Christopher Hougen, MD.Mission Hills, CA 913451750309746
- Albert Ko, MDMission Hills, CA 913451295753820
- Khoa Nguyen, MDMission Hills, CA 913451164438172
- Tedmur Qozi-Habash, M.D.Mission Hills, CA 913451710978135
Common questions
What is Christopher Gruber, M.D.'s NPI number?
Christopher Gruber, M.D.'s National Provider Identifier (NPI) is 1679743405, issued on Mar 7, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Gruber, M.D. located?
The NPPES record lists a practice address at 15031 Rinaldi St, Mission Hills, CA, 91345. Phone: (818) 639-4333. Providers update this record themselves, so call before visiting.
How can I verify Christopher Gruber, M.D.'s license?
NPPES lists California license number A99001, 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 Christopher Gruber, M.D. prescribe under Medicare Part D?
In 2024, Christopher Gruber, M.D. had 438 Medicare Part D claims for 115 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.