NPPES file of Aug 9, 2026

Karen Scrivner Greiner, MD, MPH

Complex Family Planning Physician · La Jolla, CA

Karen Scrivner Greiner, MD, MPH is a complex family planning physician with a practice address in La Jolla, California, and NPI 1427686930, issued on Mar 30, 2020. Check the license (California A185518, 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
1427686930
Name
Karen Scrivner Greiner
Credential
MD, MPH
Primary taxonomy
Complex Family Planning Physician 207VC0300X
License number
A185518 CA
Self-reported in NPPES; status is on the state search
Practice location
9300 Campus Point Dr # 7433, La Jolla, CA 92037
Phone
(858) 249-0158
Enumerated
Mar 30, 2020
Record last updated
Nov 14, 2025
Medicare enrollment
Enrolled (PECOS I20240517001955); accepts Medicare assignment
Medical or professional school
Oregon Health Sciences University School Of Medicine, 2020
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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Verify Karen Scrivner Greiner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A185518
    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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2.6 times the Medicare Part D claims of the average complex family planning physician in 2024

74 Medicare Part D claims for 33 beneficiaries, against an average of 28 among the 44 providers of this specialty who prescribed in Part D. 22 claims were for opioids.

  1. Karen Greiner74
  2. Specialty average28

Most prescribed

  1. Oxycodone Hcl19 claims
  2. Ibuprofen12 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

  1. Regents OF The University OF CaliforniaSan Diego, CA

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

Karen Scrivner Greiner among 23 complex family planning physician records in California

Karen Scrivner Greiner, MD, MPH is one of 23 complex family planning physician records with a practice address in California. 96% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 83% of them.

  • NPI issued2020 · 83% of these records are older, 0% newer
  • In a Medicare fileYes · 96% of these records are
  • In the CMS Doctors and Clinicians fileYes · 83% of these records are
  • Graduated2020 · median 2014 among the 19 with a school on file
  • Record last updated2025 · 0% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VC0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Complex Family Planning Physician providers in California

There are 23 complex family planning physician records in California.

The 8 complex family planning physician records with the nearest ZIP codes

  1. Tara Peterson, PA-CBaldwin Park, CA 917061104474634
  2. Jaclyn Grentzer, MD, MSCIRiverside, CA 925051215240338
  3. Maryam Guiahi, M.D.Santa Barbara, CA 931051386805521
  4. Heather Sweeney, MDLos Angeles, CA 900951285261750
  5. Jennifer Kerns, M.D.San Francisco, CA 941101518137116
  6. Jayne Caron, MDPalo Alto, CA 943041780213819
  7. Paul Blumenthal, MDStanford, CA 943051336202977
  8. Erica Cahill, MDStanford, CA 943051871936351

Common questions

What is Karen Scrivner Greiner, MD, MPH's NPI number?

Karen Scrivner Greiner, MD, MPH's National Provider Identifier (NPI) is 1427686930, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Karen Scrivner Greiner, MD, MPH located?

The NPPES record lists a practice address at 9300 Campus Point Dr # 7433, La Jolla, CA, 92037. Phone: (858) 249-0158. Providers update this record themselves, so call before visiting.

How can I verify Karen Scrivner Greiner, MD, MPH's license?

NPPES lists California license number A185518, 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 Scrivner Greiner, MD, MPH prescribe under Medicare Part D?

In 2024, Karen Scrivner Greiner, MD, MPH had 74 Medicare Part D claims for 33 beneficiaries; the average among complex family planning physician prescribers was 28. 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.