Mary Dolan Crisham Janik, MD
Obstetrics & Gynecology Physician · San Leandro, CA
Mary Dolan Crisham Janik, MD is an obstetrics & gynecology physician with a practice address in San Leandro, California, and NPI 1811330558, issued on Apr 11, 2013. Check the license (California A151340, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary Dolan Crisham Janik
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A151340 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Merced St FL 3, San Leandro, CA 94577
- Phone
- (510) 454-1000
- Enumerated
- Apr 11, 2013
- Record last updated
- Dec 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20171222000890); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Mary Dolan Crisham Janik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A151340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
58 Medicare Part D claims for 32 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol25 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
- Permanente Medical Group IncSan Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Dolan Crisham Janik among 5,088 obstetrics & gynecology physician records in California
Mary Dolan Crisham Janik, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 78% of them.
- NPI issued2013 · 78% of these records are older, 20% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2013 · median 2004 among the 2,700 with a school on file
- Record last updated2021 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in San Leandro → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Linda Catherine Degusta, M.D.San Leandro, CA 945771578635397
- Simone Katz, M.D.San Leandro, CA 945771770661522
- Colleen Kavanagh, M.D.San Leandro, CA 945771174608830
- Marie La Cour, M.D.San Leandro, CA 945771144372947
- Jolyn Leung, M.D.San Leandro, CA 945771629372180
- Sarah Mark-Drasin, M.D.San Leandro, CA 945771700957610
- John Polito, M.D.San Leandro, CA 945771952489965
- Robert Rubeshaw, M.D.San Leandro, CA 945771629156484
Common questions
What is Mary Dolan Crisham Janik, MD's NPI number?
Mary Dolan Crisham Janik, MD's National Provider Identifier (NPI) is 1811330558, issued on Apr 11, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mary Dolan Crisham Janik, MD located?
The NPPES record lists a practice address at 2500 Merced St FL 3, San Leandro, CA, 94577. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.
How can I verify Mary Dolan Crisham Janik, MD's license?
NPPES lists California license number A151340, 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 Mary Dolan Crisham Janik, MD prescribe under Medicare Part D?
In 2024, Mary Dolan Crisham Janik, MD had 58 Medicare Part D claims for 32 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.