Rochelle Zak, M.D.
Sleep Medicine (Psychiatry & Neurology) Physician · San Francisco, CA
Rochelle Zak, M.D. is a sleep medicine (psychiatry & neurology) physician with a practice address in San Francisco, California, and NPI 1285606863, issued on Feb 7, 2006. Check the license (California G64567, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rochelle Zak
- Credential
- M.D.
- Primary taxonomy
- Sleep Medicine (Psychiatry & Neurology) Physician 2084S0012X
- License numbers
- G64567 CA
039291 CT
176119 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2330 Post St., San Francisco, CA 94115
- Phone
- (415) 885-7886
- Enumerated
- Feb 7, 2006
- Record last updated
- Mar 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (415) 885-3650
- Medicare enrollment
- Enrolled (PECOS I20101109000250); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sleep medicine (psychiatry & neurology) physician records → All 53 in California → Look up another NPI →
Also registered at 2330 Post St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heysell Cruz PacasStudent in an Organized Health Care Education/Training Program1730979139
- Natalie Grigsby, AUDAudiologist1033784368
Verify Rochelle Zak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G64567Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average sleep medicine (psychiatry & neurology) physician in 2024
433 Medicare Part D claims for 68 beneficiaries, against an average of 655 among the 377 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 31 claims were for opioids.
Most prescribed
- Pregabalin161 claims
- Gabapentin47 claims
- Doxepin Hcl25 claims
- Trazodone Hcl24 claims
- Horizant22 claims
- Neupro21 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Regents OF The University OF CaliforniaSan Francisco, CA
- Ucsf Medical Group Business ServicesBerkeley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rochelle Zak among 53 sleep medicine (psychiatry & neurology) physician records in California
Rochelle Zak, M.D. is one of 53 sleep medicine (psychiatry & neurology) 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 62% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1987 · median 2003 among the 39 with a school on file
- Record last updated2021 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084S0012X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Psychiatry & Neurology) Physician providers in California
There are 53 sleep medicine (psychiatry & neurology) physician records in California.
All 53 in California → Every provider in San Francisco → Sleep Medicine (Psychiatry & Neurology) Physician nationwide →
The 8 sleep medicine (psychiatry & neurology) physician records with the nearest ZIP codes
- Allison Chan, DOSunnyvale, CA 940871841386000
- Ross Liebman, M.D.Sunnyvale, CA 940871740486752
- Michelle Primeau, M.D.Sunnyvale, CA 940871588862486
- Liza Ashbrook, M.D.San Francisco, CA 941581912297433
- Jason Valerio, MDMenlo Park, CA 940251316379720
- June Seliber-Klein, M.D.Monterey, CA 939401184619439
- Vivien Abad, M.D.Palo Alto, CA 943041861588030
- Matt Bianchi, MD PHDPalo Alto, CA 943041881715084
Common questions
What is Rochelle Zak, M.D.'s NPI number?
Rochelle Zak, M.D.'s National Provider Identifier (NPI) is 1285606863, issued on Feb 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rochelle Zak, M.D. located?
The NPPES record lists a practice address at 2330 Post St., San Francisco, CA, 94115. Phone: (415) 885-7886. Providers update this record themselves, so call before visiting.
How can I verify Rochelle Zak, M.D.'s license?
NPPES lists California license number G64567, 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 Rochelle Zak, M.D. prescribe under Medicare Part D?
In 2024, Rochelle Zak, M.D. had 433 Medicare Part D claims for 68 beneficiaries; the average among sleep medicine (psychiatry & neurology) physician prescribers was 655. Part D covers Medicare prescriptions only.
What is Rochelle Zak, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.