Tatiana Worobey Spirtos, M.D.
Obstetrics & Gynecology Physician · Redwood City, CA
Tatiana Worobey Spirtos, M.D. is an obstetrics & gynecology physician with a practice address in Redwood City, California, and NPI 1710903133, issued on Jul 15, 2006. Check the license (California G45093, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tatiana Worobey Spirtos
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G45093 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2900 Whipple Ave, Redwood City, CA 94062
- Phone
- (650) 366-5594
- Enumerated
- Jul 15, 2006
- Record last updated
- Sep 16, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (650) 366-6352
- Medicare enrollment
- Enrolled (PECOS I20041210000698); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1980
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 2900 Whipple Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Luis Castro, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1679587893
- Elaine Chien, MDObstetrics & Gynecology Physician1457423295
Verify Tatiana Worobey Spirtos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G45093Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
552 Medicare Part D claims for 167 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 11 claims were for opioids.
Most prescribed
- Estradiol155 claims
- Progesterone38 claims
- Estradiol (Twice Weekly)33 claims
- Yuvafem28 claims
- Clobetasol Propionate26 claims
- Valacyclovir22 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: $20.21
1 payment: food and beverage; the largest payer was Becton, Dickinson and Company. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Bills Medicare through one group practice
- Lpch Medical Group Div OF LucilePalo Alto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tatiana Worobey Spirtos among 5,088 obstetrics & gynecology physician records in California
Tatiana Worobey Spirtos, M.D. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1980 · median 2004 among the 2,700 with a school on file
- Record last updated2011 · 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 Redwood City → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Elaine Chien, MDRedwood City, CA 940621457423295
- John Hoff, MDRedwood City, CA 940621598832917
- Gerard Hoff, MDRedwood City, CA 940621831267939
- Beverly Joyce, M.D.Redwood City, CA 940621275582660
- Marian Kim, MDRedwood City, CA 940621447327861
- Andrew Liu, M.D.Redwood City, CA 940621700835162
- Julianne O'Callahan, MDRedwood City, CA 940621932158805
- Manjita Bhaumik, MDRedwood City, CA 940631518045012
Common questions
What is Tatiana Worobey Spirtos, M.D.'s NPI number?
Tatiana Worobey Spirtos, M.D.'s National Provider Identifier (NPI) is 1710903133, issued on Jul 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tatiana Worobey Spirtos, M.D. located?
The NPPES record lists a practice address at 2900 Whipple Ave, Redwood City, CA, 94062. Phone: (650) 366-5594. Providers update this record themselves, so call before visiting.
How can I verify Tatiana Worobey Spirtos, M.D.'s license?
NPPES lists California license number G45093, 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 Tatiana Worobey Spirtos, M.D. prescribe under Medicare Part D?
In 2024, Tatiana Worobey Spirtos, M.D. had 552 Medicare Part D claims for 167 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.