Janis A. Penner, M.D.
Obstetrics & Gynecology Physician · Bakersfield, CA
Janis A. Penner, M.D. is an obstetrics & gynecology physician with a practice address in Bakersfield, California, and NPI 1568776300, issued on Aug 4, 2010. Check the license (California A103386, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Janis A. Penner
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A103386 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 Discovery Dr FL 6, Bakersfield, CA 93309
- Phone
- (661) 328-9831
- Enumerated
- Aug 4, 2010
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 1200 Discovery Dr FL 6
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexandra Havard, MDObstetrics & Gynecology Physician1891105375
Verify Janis A. Penner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A103386Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
107 Medicare Part D claims for 40 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol47 claims
- Clobetasol Propionate18 claims
- Medroxyprogesterone Acetate15 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.
Janis A. Penner among 5,088 obstetrics & gynecology physician records in California
Janis A. Penner, M.D. 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 2010, is newer than 70% of them.
- NPI issued2010 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2021 · 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 Bakersfield → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Janeine BasconcilloBakersfield, CA 933091538566534
- Alexandra Havard, MDBakersfield, CA 933091891105375
- Tony Hoang, M.D.Bakersfield, CA 933091609069947
- Todd Andrews, M.D.Bakersfield, CA 933111407894215
- Wendy Crenshaw, MDBakersfield, CA 933111205814340
- Lon Graves, M.D.Bakersfield, CA 933111831122993
- Tillaikarasi Kannappan, MDBakersfield, CA 933111598743635
- Gregory Klis, MDBakersfield, CA 933111508844648
Common questions
What is Janis A. Penner, M.D.'s NPI number?
Janis A. Penner, M.D.'s National Provider Identifier (NPI) is 1568776300, issued on Aug 4, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Janis A. Penner, M.D. located?
The NPPES record lists a practice address at 1200 Discovery Dr FL 6, Bakersfield, CA, 93309. Phone: (661) 328-9831. Providers update this record themselves, so call before visiting.
How can I verify Janis A. Penner, M.D.'s license?
NPPES lists California license number A103386, 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 Janis A. Penner, M.D. prescribe under Medicare Part D?
In 2024, Janis A. Penner, M.D. had 107 Medicare Part D claims for 40 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.