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BAYSTATE OB/GYN GROUP INC
NPI 1366542342
Obstetrics & Gynecology in Springfield, MA

Active since September 22, 2006CLIA Certified · 4 labs
3455 MAIN ST STE C, SPRINGFIELD, MA 01107(413) 794-8484(413) 794-8477 Get Directions Write a Review

NPPES record last updated: October 15, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Mar 2, 2023, Mar 17, 2018, Nov 7, 2017 (3 updates tracked since 2017).

About Baystate Ob/gyn Group Inc NPPES

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

BAYSTATE OB/GYN GROUP INC (NPI 1366542342) is a healthcare organization registered as an obstetrics & gynecology in Springfield, Massachusetts and active in the NPI registry since September 2006. The organization holds 4 active CLIA laboratory certificates, maintains 3 additional practice locations, and lists Alysa Major, Revenue Cycle Manager, as its authorized official.

NPPES Registry Identity

NPI1366542342
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameBAYSTATE OB/GYN GROUP INC
Location Address3455 MAIN ST STE CSpringfield, MA 01107-1187
Mailing Address354 Birnie Ave Ste 202Springfield, MA 01107-1109 · (413) 794-8484 · Fax (413) 794-8477
Phone(413) 794-8484
Fax(413) 794-8477
Organization SubpartNo
Authorized OfficialAlysa MajorRevenue Cycle Manager · (413) 794-2519
Enumeration DateSeptember 22, 2006
Last NPPES UpdateOctober 15, 20253 updates tracked since enumeration
NPPES CertifiedOctober 15, 2025
✔ NPI 1366542342 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
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.
3455 MAIN ST STE C, Springfield, MA 01107
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Secondary Practice Locations 3

Location 1200 Silver St Unit 112Agawam, MA 01001-3067 · Phone (413) 648-8758
Location 221 Dwight Rd Ste 201Longmeadow, MA 01106-1765 · Phone (413) 794-8484 · Fax (413) 794-5910
Location 3470 Granby RdSouth Hadley, MA 01075-3218 · Phone (413) 794-8484 · Fax (413) 794-8477

Other Identifiers 1

Medicaid9785396MA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Baystate Ob/gyn Group Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

20

Medicare enrollment records show 20 clinicians reassign Medicare billing to Baystate Ob/Gyn Group Inc, which bills Medicare for the services they deliver. Of these, 11 practice at this address and 19 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 3

Obstetrics/Gynecology9
Certified Nurse Midwife (CNM)7
Nurse Practitioner4

Clinicians, nearest first (20)

Alexandra Allard, CNM
Certified Nurse Midwife (CNM)
NPI 1043943087
3455 MAIN ST STE C
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Stefanie Beekmann, CNM
Certified Nurse Midwife (CNM)
NPI 1902797848
3455 MAIN ST STE C
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Kelsey Carman, MD, MPH
Obstetrics/Gynecology
NPI 1548836745
3455 MAIN ST STE C
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Madison Decman, DO
Obstetrics/Gynecology
NPI 1336609593
3455 MAIN ST STE C
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Erica Liebermann, NP
Nurse Practitioner
NPI 1417013228
3455 MAIN ST STE C
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Alexandra Pinschmidt, DOULA
Certified Nurse Midwife (CNM)
NPI 1477320661
3455 MAIN ST STE C
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Andrea Romano
Certified Nurse Midwife (CNM)
NPI 1417432998
3455 MAIN ST STE C
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Kevin Fitzgerald, MD
Obstetrics/Gynecology
NPI 1194784454
3455 MAIN ST
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Elizabeth Otmaskin, D.O.
Obstetrics/Gynecology
NPI 1659799161
3455 MAIN STREET SUITE C BAYSTTATE OB GYN GROUP INC
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Meredith Sen, C.N.M.
Certified Nurse Midwife (CNM)
NPI 1275814113
3455 MAIN ST # C
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Sarah Thayer, CNM
Certified Nurse Midwife (CNM)
NPI 1881205979
3455 MAIN ST STE C
Springfield, MA 01107
(134) 794-8484
✔ PECOS✔ Accepts MedicareSame address
Jennifer Hallowell, MD
Obstetrics/Gynecology
NPI 1952318412
2 MEDICAL CENTER DR SUITE 206
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts Medicare0.5 mi
Debra Junnila, MD
Obstetrics/Gynecology
NPI 1952498503
2 MEDICAL CENTER DR SUITE 206
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts Medicare0.5 mi
Christopher Ollari, MD
Obstetrics/Gynecology
NPI 1669450326
2 MEDICAL CENTER DR SUITE 206
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts Medicare0.5 mi
Kimberly Thompson, D.O.
Obstetrics/Gynecology
NPI 1427222892
2 MEDICAL CENTER DR SUITE 206
Springfield, MA 01107
(413) 794-8484
✔ PECOS✔ Accepts Medicare0.5 mi
Katherine Cummings, WHNP-BC
Nurse Practitioner
NPI 1609501600
1985 MAIN ST FL 2
Springfield, MA 01103
(413) 586-2016
✔ PECOS✔ Accepts Medicare1.3 mi
Garima Devi, WHNP
Nurse Practitioner
NPI 1548831639
200 SILVER ST
Agawam, MA 01001
(413) 794-8484
✔ PECOS✔ Accepts Medicare4.5 mi
Gina Quinlivan
Certified Nurse Midwife (CNM)
NPI 1053468629
382 N MAIN ST STE 205
East Longmeadow, MA 01028
(134) 794-8484
✔ PECOS✔ Accepts Medicare5.4 mi
Rebekah Perks, NP
Nurse Practitioner
NPI 1730150863
470 GRANBY RD RAYMOND MEDICAL CENTER
South Hadley, MA 01075
(413) 533-7200
✔ PECOS✔ Accepts Medicare7.9 mi
Erin Eppsteiner, M.D.
Obstetrics/Gynecology
NPI 1922234517
30 LOCUST ST
Northampton, MA 01060
(413) 586-9866
✔ PECOS✔ Accepts Medicare14 mi

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

CLIA Laboratory Certificates CMS CLIA 4

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 22D1006305

Baystate Ob-Gyn Group Inc · Longmeadow, MA
Active · expires Nov 13, 2028
CLIA Number22D1006305
Laboratory TypePhysician Office
Certificate Effective DateNovember 14, 2026
Certificate Expiration DateNovember 13, 2028
Laboratory DirectorChristopher Ollari
Laboratory Phone(413) 794-8484
Laboratory LocationBaystate Ob-Gyn Group Inc21 Dwight Road Suite 201, Longmeadow, MA 01106
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 22D1006306

Baystate Ob-Gyn Group Inc · South Hadley, MA
Active · expires Nov 13, 2028
CLIA Number22D1006306
Laboratory TypePhysician Office
Certificate Effective DateNovember 14, 2026
Certificate Expiration DateNovember 13, 2028
Laboratory DirectorDebra Junnila
Laboratory Phone(413) 794-8484
Laboratory LocationBaystate Ob-Gyn Group Inc470 Granby Road, South Hadley, MA 01075
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 22D0709156

Baystate Ob/Gyn Group Inc · Springfield, MA
Active · expires Aug 31, 2028
CLIA Number22D0709156
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2026
Certificate Expiration DateAugust 31, 2028
Laboratory DirectorKevin Fitzgerald
Laboratory Phone(413) 794-8484
Laboratory LocationBaystate Ob/Gyn Group Inc3455 Main Street Suite C, Springfield, MA 01107
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 22D2332971

Baystate Ob/Gyn Group, Inc · Agawam, MA
Active · expires Oct 27, 2027
CLIA Number22D2332971
Laboratory TypePhysician Office
Certificate Effective DateOctober 28, 2025
Certificate Expiration DateOctober 27, 2027
Laboratory DirectorKevin Fitzgerald
Laboratory Phone(413) 648-8758
Laboratory LocationBaystate Ob/Gyn Group, Inc200 Silver Street, Suite 112, Agawam, MA 01001
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Baystate Ob/Gyn Group Inc's NPI number?

The NPI number for Baystate Ob/Gyn Group Inc is 1366542342. It was assigned to this organization in the NPPES registry on September 22, 2006.

Where is Baystate Ob/Gyn Group Inc located?

Baystate Ob/Gyn Group Inc is located at 3455 Main St Ste C, Springfield, MA 01107. The listed phone number is (413) 794-8484.

What is Baystate Ob/Gyn Group Inc's specialty?

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

Is Baystate Ob/Gyn Group Inc enrolled in Medicare?

Yes. Baystate Ob/Gyn Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Baystate Ob/Gyn Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 20 clinicians in 3 Medicare specialties reassign their Medicare billing to Baystate Ob/Gyn Group Inc. A 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 the clinician's services. The largest specialties are Obstetrics/Gynecology (9), Certified Nurse Midwife (CNM) (7) and Nurse Practitioner (4). Of these, 11 practice at this address and 19 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Baystate Ob/Gyn Group Inc hold CLIA laboratory certificates?

Yes. 4 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does Baystate Ob/Gyn Group Inc accept?

Health plans from Anthem Blue Cross and Blue Shield list Baystate Ob/Gyn Group Inc 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 Baystate Ob/Gyn Group Inc was last updated on October 15, 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.