Zachary Thomas Spalding, MD
Obstetrics & Gynecology Physician · San Luis Obispo, CA
Zachary Thomas Spalding, MD is an obstetrics & gynecology physician with a practice address in San Luis Obispo, California, and NPI 1699129528, issued on Apr 18, 2016. Check the license (California A169932, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Zachary Thomas Spalding
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A169932 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1941 Johnson Ave Ste 301, San Luis Obispo, CA 93401
- Phone
- (805) 786-4111
- Enumerated
- Apr 18, 2016
- Record last updated
- May 30, 2025
- Fax
- (805) 543-6357
- Medicare enrollment
- Enrolled (PECOS I20250401003389); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 1941 Johnson Ave Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Jacot, FNPFamily Nurse Practitioner1902380884
- Maria Rasul, MDObstetrics & Gynecology Physician1366438806
- Karen Song, MDObstetrics & Gynecology Physician1356632947
- Nicole Thompson, NPNurse Practitioner1457981615
- Amanda Thorson, DOObstetrics & Gynecology Physician1366904575
Verify Zachary Thomas Spalding in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A169932Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
34 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol17 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
- Pacific Central Coast Health CentersSan Luis Obispo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Thomas Spalding among 5,088 obstetrics & gynecology physician records in California
Zachary Thomas Spalding, 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 2016, is newer than 85% of them.
- NPI issued2016 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2016 · median 2004 among the 2,700 with a school on file
- Record last updated2025 · 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 Luis Obispo → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Anna Bobba, M.D.San Luis Obispo, CA 934011134230386
- Maria Flores-Cooper, M.D.San Luis Obispo, CA 934011649255480
- Maria Rasul, MDSan Luis Obispo, CA 934011366438806
- Karen Song, MDSan Luis Obispo, CA 934011356632947
- Vivian Storrer, MDSan Luis Obispo, CA 934011144240367
- Amanda Thorson, DOSan Luis Obispo, CA 934011366904575
- Barbara Clutter, M.D.San Luis Obispo, CA 934051720004237
- Eric Colton, MDSan Luis Obispo, CA 934051790723492
Common questions
What is Zachary Thomas Spalding, MD's NPI number?
Zachary Thomas Spalding, MD's National Provider Identifier (NPI) is 1699129528, issued on Apr 18, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Thomas Spalding, MD located?
The NPPES record lists a practice address at 1941 Johnson Ave Ste 301, San Luis Obispo, CA, 93401. Phone: (805) 786-4111. Providers update this record themselves, so call before visiting.
How can I verify Zachary Thomas Spalding, MD's license?
NPPES lists California license number A169932, 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 Zachary Thomas Spalding, MD prescribe under Medicare Part D?
In 2024, Zachary Thomas Spalding, MD had 34 Medicare Part D claims; 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.