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DR. JOHN DANIEL GIANNONE M.D.
NPI 1194950337
Psychiatry & Neurology - Psychiatry in Southborough, MA

Active since May 18, 2009PECOS Enrolled
24 NEWTON ST, SOUTHBOROUGH, MA 01772(508) 460-3190(508) 460-3279 Get Directions Write a Review

NPPES record last updated: July 22, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. John Daniel Giannone M.d. NPPES

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

DR. JOHN DANIEL GIANNONE M.D. (NPI 1194950337) is an individual psychiatry provider in Southborough, Massachusetts, licensed in Massachusetts (261076) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194950337
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. JOHN DANIEL GIANNONECredential: M.D.
Location Address24 NEWTON STSouthborough, MA 01772-1215
Mailing Address630 Plantation StWorcester, MA 01605-2038 · (508) 368-5532 · Fax (508) 460-3279
Phone(508) 460-3190
Fax(508) 460-3279
Sole ProprietorNo
Enumeration DateMay 18, 2009
Last NPPES UpdateJuly 22, 2015
✔ NPI 1194950337 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MA · 261076
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
24 NEWTON ST, Southborough, MA 01772
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John Daniel Giannone M.d. 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 Reassignment

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

Steward Medical Group, Inc
18 mi
Specialist
9 GALEN ST
Watertown, MA 02472
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,103 clinicians in this Medicare group
NPI 1629398219 (615) 467-4474

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 01772 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
$177.36 typical visit price
range $58.86 – $177.36
Typical copayment $44.34 (range $14.71 – $44.34)
Most-billed visit code 99205
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.

FRANK CHAU M.D.
Internal Medicine
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-3250
HANNA MARGARET BERRY NP
Nurse Practitioner (Family)
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 481-5500
CATHERINE ANNE LANG PHARMD
Pharmacist
24 NEWTON ST, WALGREENS PHARMACY
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-5323
AMEE RATHOD M.D.
Internal Medicine
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 481-5500
JUSTIN NATHANIEL DORFMAN D.O.
Internal Medicine
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-3250
MARIJEAN LAMOUREAUX RD,LDN,CDE
Dietitian, Registered (Nutrition, Pediatric)
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-3100
DR. MAI CHU O.D.
Optometrist
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (084) 603-1505
GRACE C WINSHIP NP
Nurse Practitioner (Family)
24 NEWTON ST
SOUTHBOROUGH, MA 01772
Worcester County (508) 460-3250

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 John Giannone's NPI number?

The NPI number for John Giannone is 1194950337. It was assigned to this individual provider in the NPPES registry on May 18, 2009.

Where is John Giannone located?

John Giannone practices at 24 Newton St, Southborough, MA 01772. The listed phone number is (508) 460-3190.

What is John Giannone's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is John Giannone enrolled in Medicare?

Yes. John Giannone is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Giannone's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Giannone reassigns Medicare benefits to Steward Medical Group, Inc (Watertown, MA). 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 John Giannone'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 John Giannone was last updated on July 22, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.