Phillip Michael Grob, M. D.
Geriatric Psychiatry Physician · Santa Rosa, CA
Phillip Michael Grob, M. D. is a geriatric psychiatry physician with a practice address in Santa Rosa, California, and NPI 1588725253, issued on Dec 13, 2006. Check the license (California G85079, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Phillip Michael Grob
- Credential
- M. D.
- Primary taxonomy
- Geriatric Psychiatry Physician 2084P0805X
- License number
- G85079 CA
Self-reported in NPPES; status is on the state search - Practice location
- 339 College Ave, Santa Rosa, CA 95401
- Phone
- (707) 573-0223
- Enumerated
- Dec 13, 2006
- Record last updated
- Jul 8, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (707) 573-0222
- Entity
- Type 1 · individual
8 nearest geriatric psychiatry physician records → All 87 in California → Look up another NPI →
Also registered at 339 College Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mono Cacy-McFarland, LPTLicensed Psychiatric Technician1255197315
- Christiane GudeStudent in an Organized Health Care Education/Training Program1831057249
Verify Phillip Michael Grob in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G85079Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average geriatric psychiatry physician in 2024
3,511 Medicare Part D claims for 142 beneficiaries, against an average of 1,485 among the 473 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Quetiapine Fumarate264 claims
- Lorazepam199 claims
- Clozapine177 claims
- Trazodone Hcl125 claims
- Buspirone Hcl111 claims
- Aripiprazole107 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.
Industry payments in 2024: $546.08
23 payments; by number, the most common kind was food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 200 providers of this specialty with any payment received $2,189.26 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Phillip Michael Grob among 87 geriatric psychiatry physician records in California
Phillip Michael Grob, M. D. is one of 87 geriatric psychiatry physician records with a practice address in California. 61% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 45% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileNo · 36% of these records are
- Record last updated2014 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0805X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Psychiatry Physician providers in California
There are 87 geriatric psychiatry physician records in California.
All 87 in California → Every provider in Santa Rosa → Geriatric Psychiatry Physician nationwide →
The 8 geriatric psychiatry physician records with the nearest ZIP codes
- Esther Novak, M.D.Davis, CA 956161679682611
- Imnas Coquia, M.D.Roseville, CA 956611699988915
- Bethany Newman, NPRoseville, CA 956611982583399
- Naima Siddiqui, M.D.San Jose, CA 951281811193477
- Chanida Siripraparat, MD, MPHSan Jose, CA 951281922028455
- Anjali Deshmukh, MDSan Jose, CA 951261770657470
- David Crockett, MDHollister, CA 950231376605535
- Izzet Yazgan, M.D.Capitola, CA 950101982734109
Common questions
What is Phillip Michael Grob, M. D.'s NPI number?
Phillip Michael Grob, M. D.'s National Provider Identifier (NPI) is 1588725253, issued on Dec 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Phillip Michael Grob, M. D. located?
The NPPES record lists a practice address at 339 College Ave, Santa Rosa, CA, 95401. Phone: (707) 573-0223. Providers update this record themselves, so call before visiting.
How can I verify Phillip Michael Grob, M. D.'s license?
NPPES lists California license number G85079, 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 Phillip Michael Grob, M. D. prescribe under Medicare Part D?
In 2024, Phillip Michael Grob, M. D. had 3,511 Medicare Part D claims for 142 beneficiaries; the average among geriatric psychiatry physician prescribers was 1,485. 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.