Jasper Werby
Psychiatry Physician · Greenbrae, CA
Jasper Werby is a psychiatry physician with a practice address in Greenbrae, California, and NPI 1427517150, issued on Mar 12, 2019. Check the license (California A193827, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jasper Werby
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A193827 CA
Self-reported in NPPES; status is on the state search - Practice location
- 250 Bon Air RD, Greenbrae, CA 94904
- Phone
- (415) 499-6666
- Enumerated
- Mar 12, 2019
- Record last updated
- May 3, 2024
- Medicare enrollment
- Enrolled (PECOS I20241007000742); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2020
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 250 Bon Air RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Abrahams, MFTMarriage & Family Therapist1184738445
- Jory Adam, PA-CSurgical Physician Assistant1922269521
- Samuel Adams, MDHospitalist Physician1497785034
- Barbara Addleman, RNRegistered Nurse1053551267
- Linda Alexander, RNPsychiatric/Mental Health Registered Nurse1205589405
- Maxwell AlikinneyCounselor1538668728
Verify Jasper Werby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A193827Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average psychiatry physician in 2024
32 Medicare Part D claims for 12 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
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
- Bay Psychiatric AssociatesBerkeley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jasper Werby among 8,673 psychiatry physician records in California
Jasper Werby is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2020 · median 2005 among the 3,295 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 psychiatry physician records list a practice address in Greenbrae
They are 18 of the 727 NPPES records with a practice address in Greenbrae, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Greenbrae → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Gordon Baumbacher, M.D.Kentfield, CA 949041144378217
- Heather Carlberg, M.D.Greenbrae, CA 949041346329968
- Mary Ann Caswick, MDGreenbrae, CA 949041467503912
- Sarah Centeno, MDKentfield, CA 949041366409922
- Richard Glass, M.D.Greenbrae, CA 949041952497745
- Carolyn Gracie, M.D.Kentfield, CA 949041639260862
- Jeanette Margolin, M.D.Kentfield, CA 949041447299243
- Edwyne Nazarian, MDKentfield, CA 949041093868655
Common questions
What is Jasper Werby's NPI number?
Jasper Werby's National Provider Identifier (NPI) is 1427517150, issued on Mar 12, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Jasper Werby located?
The NPPES record lists a practice address at 250 Bon Air RD, Greenbrae, CA, 94904. Phone: (415) 499-6666. Providers update this record themselves, so call before visiting.
How can I verify Jasper Werby's license?
NPPES lists California license number A193827, 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 Jasper Werby prescribe under Medicare Part D?
In 2024, Jasper Werby had 32 Medicare Part D claims for 12 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.