NPPES file of Aug 9, 2026

Thomas Sample Bailey, MD

Obstetrics & Gynecology Physician · Mission Viejo, CA

Thomas Sample Bailey, MD is an obstetrics & gynecology physician with a practice address in Mission Viejo, California, and NPI 1598714818, issued on May 6, 2006. Check the license (California G22648, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1598714818
Name
Thomas Sample Bailey
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
G22648 CA
Self-reported in NPPES; status is on the state search
Practice location
26800 Crown Valley Pkwy, Mission Viejo, CA 92691
Phone
(949) 364-1040
Enumerated
May 6, 2006
Record last updated
Oct 15, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(949) 365-7037
Medicaid ID
G226480 CA
Medicare enrollment
Enrolled (PECOS I20040427000261); accepts Medicare assignment
Medical or professional school
University Of Arizona College Of Medicine, 1971
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 26800 Crown Valley Pkwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Soodabeh Abravesh, M.D.Obstetrics & Gynecology Physician1376785865
  2. Matt Ahmadi, D.P.M.Foot & Ankle Surgery Podiatrist1285635144
  3. Jennifer Altamira, ACNPAcute Care Nurse Practitioner1205815248
  4. Habib Azad, M.D.Nephrology Physician1114962610
  5. Bahman Badie, M.D.Internal Medicine Physician1396721916
  6. Mehrnaz Badie, M.D.Internal Medicine Physician1831212885

Verify Thomas Sample Bailey in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G22648
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the California license search

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3.9 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024

642 Medicare Part D claims for 132 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.

  1. Thomas Bailey642
  2. Specialty average165

Most prescribed

  1. Estradiol91 claims
  2. Valacyclovir41 claims
  3. Alendronate Sodium37 claims
  4. Progesterone30 claims
  5. Premarin28 claims
  6. Oxybutynin Chloride Er23 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: $356.30

7 payments; by number, the most common kind was food and beverage; the largest payer was Biogen, Inc. 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.

  1. Thomas Bailey$356.30
  2. Specialty average$1,030.61

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

  1. Providence Medical FoundationFullerton, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

21 obstetrics & gynecology physician records list a practice address in Mission Viejo

They are 21 of the 2,156 NPPES records with a practice address in Mission Viejo, and 5,088 obstetrics & gynecology physician records in California.

Other obstetrics & gynecology physician records in California

  1. Ingrid Aalami, MDSan Jose, CA1952376550
  2. Avisa Abaian- Eagar, M.D.Orange, CA1316057755
  3. Derek Abbassi, MDWalnut Creek, CA1841364155
  4. Ahmed Abdelaziz, MDSanta Maria, CA1790039733
  5. Alireza Abdollah Shamshirsaz, M.D.Palo Alto, CA1881804235
  6. Nicole Abell, DOVentura, CA1811243603
  7. Zachary AbelsonLos Angeles, CA1689237414
  8. Ray Abinader, M.D.Loma Linda, CA1770901548
  9. Tarek Abou El Kheir, M.D.San Bernardino, CA1477521789
  10. Nada Abou-HaibaLos Angeles, CA1134067549

Common questions

What is Thomas Sample Bailey, MD's NPI number?

Thomas Sample Bailey, MD's National Provider Identifier (NPI) is 1598714818, issued on May 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Sample Bailey, MD located?

The NPPES record lists a practice address at 26800 Crown Valley Pkwy, Mission Viejo, CA, 92691. Phone: (949) 364-1040. Providers update this record themselves, so call before visiting.

How can I verify Thomas Sample Bailey, MD's license?

NPPES lists California license number G22648, 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 Thomas Sample Bailey, MD prescribe under Medicare Part D?

In 2024, Thomas Sample Bailey, MD had 642 Medicare Part D claims for 132 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.