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THOMAS GRINDBERG MD
NPI 1932595733
Obstetrics & Gynecology in Northampton, MA

Active since April 09, 2015PECOS Enrolled
325B KING ST, NORTHAMPTON, MA 01060(413) 586-2496(413) 923-5557 Get Directions Write a Review

NPPES record last updated: March 7, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 7, 2025, Dec 30, 2019 (2 updates tracked since 2019).

About Thomas Grindberg Md NPPES

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

THOMAS GRINDBERG MD (NPI 1932595733) is an individual obstetrics & gynecology provider in Northampton, Massachusetts, licensed in Massachusetts (281799) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1932595733
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameTHOMAS GRINDBERGCredential: MD
Location Address325B KING STNorthampton, MA 01060-2370
Mailing Address280 Chestnut St Fl 2Springfield, MA 01199-1001 · (413) 794-5700
Phone(413) 586-2496
Fax(413) 923-5557
Sole ProprietorNo
Enumeration DateApril 9, 2015
Last NPPES UpdateMarch 7, 20252 updates tracked since enumeration
NPPES CertifiedMarch 7, 2025
✔ NPI 1932595733 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in MA · 281799✔ Licensed in NY · 334027
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
325B KING ST, Northampton, MA 01060
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas Grindberg Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignments

7

Medicare enrollment records show Thomas Grindberg reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Baystate Medical Practices, Inc
15 mi
Emergency Medical Services
759 CHESTNUT ST
Springfield, MA 01199
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,537 clinicians in this Medicare group
NPI 1548205909 (413) 794-5700
Mercy Inpatient Medical Associates Inc.
15 mi
Internal Medicine
271 CAREW ST
Springfield, MA 01104
  • Reassigned Medicare billing, Massachusetts enrollment
  • 168 clinicians in this Medicare group
NPI 1407845282 (413) 748-9321
Saint Vincent Physician Services, Inc.
43 mi
Family Medicine
123 SUMMER ST STE 279
Worcester, MA 01608
  • Reassigned Medicare billing, Massachusetts enrollment
  • 197 clinicians in this Medicare group
NPI 1013997329 (508) 363-6040
Obhg Massachusetts PC
80 mi
Obstetrics & Gynecology
1 GENERAL ST
Lawrence, MA 01841
  • Reassigned Medicare billing, Massachusetts enrollment
  • 38 clinicians in this Medicare group
NPI 1740844083 (864) 908-3530
Michael J Grossman MD PC
81 mi
Obstetrics & Gynecology
565 TURNPIKE ST, SUITE 74
North Andover, MA 01845
  • Reassigned Medicare billing, Massachusetts enrollment
  • 24 clinicians in this Medicare group
NPI 1770530255 (978) 682-2121
Obhg Massachusetts - Direct, P.C.
86 mi
Obstetrics
680 CENTRE ST
Brockton, MA 02302
  • Reassigned Medicare billing, Massachusetts enrollment
  • Medicare enrollment name: Obhg Massachusetts - Direct PC
  • 100 clinicians in this Medicare group
NPI 1487229035 (800) 967-2289
New York University
1,167 mi
Cardiovascular Disease
3301 QUANTUM BLVD
Boynton Beach, FL 33426
  • Reassigned Medicare billing, New York enrollment
  • 7,712 clinicians in this Medicare group
NPI 1285826438 (877) 648-2964

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 01060 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
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
Established Patient
$73.22 typical visit price
range $19.11 – $144.84
Typical copayment $18.30 (range $4.77 – $36.21)
Most-billed visit code 99213
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.

GLENDA B FLYNN NP
Nurse Practitioner (Family)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 387-4100
NANCY LOGAN P.A.
Physician Assistant (Medical)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 584-1588
KYLE A. COOPER MD
Internal Medicine (Cardiovascular Disease)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 794-2273
STEVEN W DIPILLO MD
Internal Medicine (Cardiovascular Disease)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 584-1588
KATELYN C. DUTKIEWICZ PA
Physician Assistant
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 387-4100
MS. KATHLEEN L GRANDISON MD
Family Medicine
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 625-9717
LEAH CULLER MORRISON NP
Nurse Practitioner (Family)
325B KING ST
NORTHAMPTON, MA 01060
Hampshire County (413) 387-4100
ANN COOPER D.O.
Emergency Medicine
325B KING ST, #3
NORTHAMPTON, MA 01060
Hampshire County (413) 387-4101

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 Thomas Grindberg's NPI number?

The NPI number for Thomas Grindberg is 1932595733. It was assigned to this individual provider in the NPPES registry on April 9, 2015.

Where is Thomas Grindberg located?

Thomas Grindberg practices at 325B King St, Northampton, MA 01060. The listed phone number is (413) 586-2496.

What is Thomas Grindberg's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Thomas Grindberg enrolled in Medicare?

Yes. Thomas Grindberg is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Thomas Grindberg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Grindberg reassigns Medicare benefits to 7 organizations: Baystate Medical Practices, Inc (Springfield, MA), Mercy Inpatient Medical Associates Inc. (Springfield, MA), Saint Vincent Physician Services, Inc. (Worcester, MA), Obhg Massachusetts PC (Lawrence, MA), Michael J Grossman MD PC (North Andover, MA) and 2 more organizations, listed in the Medicare section above. Each 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 Thomas Grindberg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Grindberg accept?

Health plans from Taro Health list Thomas Grindberg as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Thomas Grindberg was last updated on March 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.