Karen B. Song, MD
Obstetrics & Gynecology Physician · San Luis Obispo, CA
Karen B. Song, MD is an obstetrics & gynecology physician with a practice address in San Luis Obispo, California, and NPI 1356632947, issued on Apr 29, 2011. Check the license (California A107061, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen B. Song
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- A107061 CA
2014020947 MO
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 29, 2011
- Record last updated
- Dec 24, 2024
- Fax
- (805) 543-6357
- Medicaid ID
- 1356632947 MO
- Medicare enrollment
- Enrolled (PECOS I20111010000124); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2007
- 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
- Zachary Spalding, MDObstetrics & Gynecology Physician1699129528
- Nicole Thompson, NPNurse Practitioner1457981615
- Amanda Thorson, DOObstetrics & Gynecology Physician1366904575
Verify Karen B. Song in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A107061Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
344 Medicare Part D claims for 108 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Estradiol117 claims
- Yuvafem39 claims
- Progesterone37 claims
- Valacyclovir20 claims
- Estradiol (Twice Weekly)16 claims
- Medroxyprogesterone Acetate11 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Pacific Central Coast Health CentersSanta Maria, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen B. Song among 5,088 obstetrics & gynecology physician records in California
Karen B. Song, 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 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2007 · median 2004 among the 2,700 with a school on file
- Record last updated2024 · 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
- Zachary Spalding, MDSan Luis Obispo, CA 934011699129528
- 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 Karen B. Song, MD's NPI number?
Karen B. Song, MD's National Provider Identifier (NPI) is 1356632947, issued on Apr 29, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Karen B. Song, 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 Karen B. Song, MD's license?
NPPES lists California license number A107061, 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 Karen B. Song, MD prescribe under Medicare Part D?
In 2024, Karen B. Song, MD had 344 Medicare Part D claims for 108 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Karen B. Song, MD's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.