Allison Chang, MD
Psychiatry Physician · Palo Alto, CA
Allison Chang, MD is a psychiatry physician with a practice address in Palo Alto, California, and NPI 1114662574, issued on Apr 30, 2022. Check the license (California A201276, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allison Chang
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- A201276 CA
MDR-8286 HI
Self-reported in NPPES; status is on the state search - Practice location
- 401 Quarry RD RM 2206, Palo Alto, CA 94304
- Phone
- (650) 725-0957
- Enumerated
- Apr 30, 2022
- Record last updated
- Apr 15, 2025
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 401 Quarry RD RM 2206
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janet Baek, MDPsychiatry Physician1407353170
- Ideen Kiafar, DOPsychiatry Physician1275107443
- Scott Lee, MDPsychiatry Physician1144809500
- Aaron Lulla, MD, PHDPsychiatry Physician1316514581
- Daniel Miller-Azar, MDPsychiatry Physician1003566340
- Elizabeth Ogunrinde, MD, PHDPsychiatry Physician1699354803
Verify Allison Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A201276Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average psychiatry physician in 2024
238 Medicare Part D claims for 50 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Mirtazapine31 claims
- Aripiprazole19 claims
- Escitalopram Oxalate18 claims
- Olanzapine16 claims
- Buspirone Hcl15 claims
- Risperidone14 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: $21.19
1 payment: food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 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.
Allison Chang among 8,673 psychiatry physician records in California
Allison Chang, MD 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 2022, is newer than 93% of them.
- NPI issued2022 · 93% of these records are older, 4% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2025 · 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).
215 psychiatry physician records list a practice address in Palo Alto
They are 215 of the 7,617 NPPES records with a practice address in Palo Alto, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Palo Alto → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Elias Aboujaoude, MDPalo Alto, CA 943041649209768
- Steven Bagley, MDPalo Alto, CA 943041730125048
- Justin Birnbaum, M.D.Palo Alto, CA 943041013007848
- Kim Bullock, M.D.Palo Alto, CA 943041790842763
- Christopher Capelle, MDPalo Alto, CA 943041902919640
- John Dorfman, M. D.Palo Alto, CA 943041912944687
- Carla Galloway, M.D.Palo Alto, CA 943041790881506
- Robert Hayward, MD, MPHPalo Alto, CA 943041437216744
Common questions
What is Allison Chang, MD's NPI number?
Allison Chang, MD's National Provider Identifier (NPI) is 1114662574, issued on Apr 30, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Allison Chang, MD located?
The NPPES record lists a practice address at 401 Quarry RD RM 2206, Palo Alto, CA, 94304. Phone: (650) 725-0957. Providers update this record themselves, so call before visiting.
How can I verify Allison Chang, MD's license?
NPPES lists California license number A201276, 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 Allison Chang, MD prescribe under Medicare Part D?
In 2024, Allison Chang, MD had 238 Medicare Part D claims for 50 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.