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DR. NICHOLAS STEVEN REGENNITTER MD
NPI 1013591031
Internal Medicine in Rohnert Park, CA

Active since May 06, 2021PECOS EnrolledAccepts Medicare Assignment
6000 STATE FARM DR, ROHNERT PARK, CA 94928(707) 585-8347 Get Directions Write a Review

NPPES record last updated: October 24, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Nicholas Steven Regennitter Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. NICHOLAS STEVEN REGENNITTER MD (NPI 1013591031) is an individual internal medicine provider in Rohnert Park, California, licensed in California (A194756) and active in the NPI registry since May 2021. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Jose, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1013591031
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. NICHOLAS STEVEN REGENNITTERCredential: MD
Location Address6000 STATE FARM DRRohnert Park, CA 94928-2225
Mailing AddressPo Box 276950Sacramento, CA 95827-6950 · (707) 585-8347
Phone(707) 585-8347
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMay 6, 2021
Last NPPES UpdateOctober 24, 2025
NPPES CertifiedOctober 24, 2025
✔ NPI 1013591031 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A194756
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
6000 STATE FARM DR, Rohnert Park, CA 94928
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Secondary Practice Location 1

Location 13231 Fieldgate CtSan Jose, CA 95148-3001 · Phone (650) 898-2560

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Nicholas Steven Regennitter Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6406250141
PECOS Enrollment IDI20251008004376
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Nicholas Regennitter reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation
44 mi
Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1366898538 (510) 204-8180

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94928 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.00 typical visit price
range $63.04 – $187.01
Typical copayment $35.50 (range $15.76 – $46.75)
Most-billed visit code 99204
Established Patient
$109.88 typical visit price
range $21.02 – $153.40
Typical copayment $27.47 (range $5.25 – $38.35)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. FERNANDO BORIA GONZALEZ MD
Family Medicine
6000 STATE FARM DR
ROHNERT PARK, CA 94928
Sonoma County (787) 425-9543

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nicholas Regennitter's NPI number?

The NPI number for Nicholas Regennitter is 1013591031. It was assigned to this individual provider in the NPPES registry on May 6, 2021.

Where is Nicholas Regennitter located?

Nicholas Regennitter practices at 6000 State Farm Dr, Rohnert Park, CA 94928. The listed phone number is (707) 585-8347.

What is Nicholas Regennitter's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nicholas Regennitter enrolled in Medicare?

Yes. Nicholas Regennitter is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Nicholas Regennitter's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Regennitter reassigns Medicare benefits to Sutter Bay Medical Foundation (Orinda, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Regennitter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Nicholas Regennitter was last updated on October 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.