Sienna Sablan Go, M.D.
Family Medicine Physician · Costa Mesa, CA
Sienna Sablan Go, M.D. is a family medicine physician with a practice address in Costa Mesa, California, and NPI 1295759298, issued on Jul 26, 2006. Check the license (California A053859, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sienna Sablan Go
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A053859 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Mark LN, Costa Mesa, CA 92626
- Phone
- (714) 457-4545
- Enumerated
- Jul 26, 2006
- Record last updated
- Dec 4, 2025
- Fax
- (714) 957-5520
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Sienna Sablan Go in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A053859Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
66 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium21 claims
- Divalproex Sodium Er21 claims
- Levothyroxine Sodium21 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.
Sienna Sablan Go among 17,133 family medicine physician records in California
Sienna Sablan Go, M.D. is one of 17,133 family medicine 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 family medicine physician records list a practice address in Costa Mesa
They are 56 of the 4,286 NPPES records with a practice address in Costa Mesa, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Costa Mesa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ronald Bangsil, MDCosta Mesa, CA 926261043261654
- David Chun, MDCosta Mesa, CA 926261932199213
- James Ferguson, DOCosta Mesa, CA 926261689625212
- Guy Gottschalk, M.D.Costa Mesa, CA 926261235228750
- Joseph Horejsi, MDCosta Mesa, CA 926261295726347
- Michael Kao, M.D.Costa Mesa, CA 926261316953805
- Ena Kariya, MDCosta Mesa, CA 926261588655658
- Peter Kim, M.D.Costa Mesa, CA 926261609815224
Common questions
What is Sienna Sablan Go, M.D.'s NPI number?
Sienna Sablan Go, M.D.'s National Provider Identifier (NPI) is 1295759298, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sienna Sablan Go, M.D. located?
The NPPES record lists a practice address at 1 Mark LN, Costa Mesa, CA, 92626. Phone: (714) 457-4545. Providers update this record themselves, so call before visiting.
How can I verify Sienna Sablan Go, M.D.'s license?
NPPES lists California license number A053859, 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 Sienna Sablan Go, M.D. prescribe under Medicare Part D?
In 2024, Sienna Sablan Go, M.D. had 66 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.