Nicholas Steven Regennitter, MD
Internal Medicine Physician · Rohnert Park, CA
Nicholas Steven Regennitter, MD is an internal medicine physician with a practice address in Rohnert Park, California, and NPI 1013591031, issued on May 6, 2021. Check the license (California A194756, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nicholas Steven Regennitter
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A194756 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6000 State Farm Dr, Rohnert Park, CA 94928
- Phone
- (707) 585-8347
- Enumerated
- May 6, 2021
- Record last updated
- Oct 24, 2025
- Medicare enrollment
- Enrolled (PECOS I20251008004376); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 6000 State Farm Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fernando Boria Gonzalez, MDFamily Medicine Physician1811556418
Verify Nicholas Steven Regennitter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A194756Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
244 Medicare Part D claims for 47 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Metoprolol Succinate24 claims
- Hydrochlorothiazide19 claims
- Losartan Potassium17 claims
- Nifedipine Er16 claims
- Atorvastatin Calcium14 claims
- Eliquis12 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: $84.01
3 payments; by number, the most common kind was food and beverage; the largest payer was Avadel Cns Pharmaceuticals, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Sutter Bay Medical FoundationSanta Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas Steven Regennitter among 17,696 internal medicine physician records in California
Nicholas Steven Regennitter, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2020 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Rohnert Park
They are 9 of the 483 NPPES records with a practice address in Rohnert Park, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Rohnert Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nana Barnes, MDRohnert Park, CA 949281063900520
- Michael Bunce, MDRohnert Park, CA 949281740369875
- Sara Ganeless Levine, MDRohnert Park, CA 949281326122490
- Steven Gelber, M.D.Rohnert Park, CA 949281144495326
- Paul Johnson, MDRohnert Park, CA 949281881778876
- Hyejo Jun, MDRohnert Park, CA 949281982946547
- Arnold Loo, D.O.Rohnert Park, CA 949281063716918
- Bridgit Travinsky, M.D.Rohnert Park, CA 949281295153930
Common questions
What is Nicholas Steven Regennitter, MD's NPI number?
Nicholas Steven Regennitter, MD's National Provider Identifier (NPI) is 1013591031, issued on May 6, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Steven Regennitter, MD located?
The NPPES record lists a practice address at 6000 State Farm Dr, Rohnert Park, CA, 94928. Phone: (707) 585-8347. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Steven Regennitter, MD's license?
NPPES lists California license number A194756, 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 Nicholas Steven Regennitter, MD prescribe under Medicare Part D?
In 2024, Nicholas Steven Regennitter, MD had 244 Medicare Part D claims for 47 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.