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JOSEPH M. GRONDAHL MD
NPI 1073691887
Family Medicine in Vallejo, CA

Active since November 01, 2006PECOS EnrolledAccepts Medicare Assignment
975 SERENO DR, VALLEJO, CA 94589(707) 651-1000 Get Directions Write a Review

NPPES record last updated: December 13, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Joseph M. Grondahl Md NPPES

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

JOSEPH M. GRONDAHL MD (NPI 1073691887) is an individual family medicine provider in Vallejo, California, licensed in California (A66118) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of State University Of New York At Stony Brook, School Of Medicine (1997).

NPPES Registry Identity

NPI1073691887
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameJOSEPH M. GRONDAHLCredential: MD
Location Address975 SERENO DRVallejo, CA 94589-2441
Mailing Address1800 Harrison St Fl 7Oakland, CA 94612-3466 · (510) 625-6262
Phone(707) 651-1000
Sole ProprietorNo
Medical School CMSState University Of New York At Stony Brook, School Of MedicineGraduated 1997
Enumeration DateNovember 1, 2006
Last NPPES UpdateDecember 13, 2021
✔ NPI 1073691887 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A66118
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
975 SERENO DR, Vallejo, CA 94589
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Other Identifiers 1

Medicaid00A661180CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Joseph M. Grondahl 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 ID2961698675
PECOS Enrollment IDI20101119001137
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94589 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
$98.85 typical visit price
range $65.02 – $191.95
Typical copayment $24.71 (range $16.25 – $47.98)
Most-billed visit code 99203
Established Patient
$113.05 typical visit price
range $21.86 – $157.69
Typical copayment $28.26 (range $5.46 – $39.42)
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 20

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

DR. ROBERTA YIWUN WANG M.D.
Physical Medicine & Rehabilitation
975 SERENO DR
VALLEJO, CA 94589
Napa County (707) 651-5128
RIHONG ZHOU
Pharmacist
975 SERENO DR
VALLEJO, CA 94589
Napa County (707) 651-2072
EVAN HIRSCHBEIN
Student in an Organized Health Care Education/Training Program
975 SERENO DR
VALLEJO, CA 94589
Napa County (707) 339-2074
MS. JEAN BROADNAX LCSW
Social Worker (Clinical)
975 SERENO DR
VALLEJO, CA 94589
Napa County (707) 651-4423
SEAN NISAM
Student in an Organized Health Care Education/Training Program
975 SERENO DR
VALLEJO, CA 94589
Napa County (707) 651-4071
LI M. TSANG MD
Anesthesiology
975 SERENO DR
VALLEJO, CA 94589
Napa County (707) 651-1000
DONN R. ERICKSON MD
Family Medicine
975 SERENO DR
VALLEJO, CA 94589
Napa County (707) 651-1000
JOHN S. WOOD MD
Surgery
975 SERENO DR
VALLEJO, CA 94589
Napa County (707) 651-1000

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 Joseph Grondahl's NPI number?

The NPI number for Joseph Grondahl is 1073691887. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Joseph Grondahl located?

Joseph Grondahl practices at 975 Sereno Dr, Vallejo, CA 94589. The listed phone number is (707) 651-1000.

What is Joseph Grondahl's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Joseph Grondahl enrolled in Medicare?

Yes. Joseph Grondahl 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.

When was this NPI record last updated?

The NPPES record for Joseph Grondahl was last updated on December 13, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.