Penny Ellen Borenstein, MD
Public Health & General Preventive Medicine Physician · San Luis Obispo, CA
Penny Ellen Borenstein, MD is a public health & general preventive medicine physician with a practice address in San Luis Obispo, California, and NPI 1588830863, issued on May 6, 2008. Check the license (California G88337, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Penny Ellen Borenstein
- Credential
- MD
- Primary taxonomy
- Public Health & General Preventive Medicine Physician 2083P0901X
- License number
- G88337 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2191 Johnson Ave, San Luis Obispo, CA 93401
- Phone
- (805) 781-5519
- Enumerated
- May 6, 2008
- Record last updated
- Sep 28, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101217000702); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 1988
- Entity
- Type 1 · individual
Also registered at 2191 Johnson Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Theresa Anselmo, RDHDental Hygienist1144589516
- Adrian Ayers, RN/BSN/PHN/MSNPediatric Nurse Practitioner1881774495
- Daphne Boatright, RN MEDRegistered Nurse1114255130
- Alice Bodlak, RNCase Management Registered Nurse1164603569
- Laura Buckert, BSRN, PHNCase Management Registered Nurse1366895898
- Zoila CasalisCase Manager/Care Coordinator1760009880
Verify Penny Ellen Borenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G88337Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 91% of the cost of the top drugs
397 Medicare Part D claims for 198 beneficiaries, against an average of 820 among the 336 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Typhim Vi90 claims
- Boostrix Tdap56 claims
- Abrysvo38 claims
- Havrix36 claims
- Yf-Vax36 claims
- Ipol33 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.
Industry payments in 2024: $18.57
1 payment: food and beverage; the largest payer was Pfizer Inc. The 181 providers of this specialty with any payment received $3,513.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- County OF San Luis ObispoSan Luis Obispo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Public Health & General Preventive Medicine Physician providers in California
There are 325 public health & general preventive medicine physician records in California.
Other public health & general preventive medicine physician records in California
- Sharon Adler, MD,MPHOakland, CA1184089484
- Wollelaw Agmas, M.DRancho Cucamonga, CA1174937825
- Samer Al-Saghbini, MDFresno, CA1881772457
- Vicki AlexanderOakland, CA1548407596
- Matthew Allison, MDSan Diego, CA1700988730
- Frank Alvarez, MDSanta Clarita, CA1255350971
- Pauli Amornkul, MDSan Francisco, CA1720337306
- Aimie Apigian, M.D.Menifee, CA1437440138
- Sourabh Arora, MDSanta Monica, CA1063275477
- Katherine Au, DORoseville, CA1770112450
Common questions
What is Penny Ellen Borenstein, MD's NPI number?
Penny Ellen Borenstein, MD's National Provider Identifier (NPI) is 1588830863, issued on May 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Penny Ellen Borenstein, MD located?
The NPPES record lists a practice address at 2191 Johnson Ave, San Luis Obispo, CA, 93401. Phone: (805) 781-5519. Providers update this record themselves, so call before visiting.
How can I verify Penny Ellen Borenstein, MD's license?
NPPES lists California license number G88337, 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 Penny Ellen Borenstein, MD prescribe under Medicare Part D?
In 2024, Penny Ellen Borenstein, MD had 397 Medicare Part D claims for 198 beneficiaries; the average among public health & general preventive medicine physician prescribers was 820. 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.