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DR. GLEN THOMAS GRANATI M.D.
NPI 1467872739
Internal Medicine - Critical Care Medicine in Port Jefferson, NY

Active since April 24, 2014PECOS EnrolledAccepts Medicare Assignment
91.25/100
CMS Quality Rating
MATHER HOSPITAL, 75 N COUNTRY RD, PORT JEFFERSON, NY 11777(631) 473-1320 Get Directions Write a Review

NPPES record last updated: September 10, 2020. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Dr. Glen Thomas Granati M.d. NPPES

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

DR. GLEN THOMAS GRANATI M.D. (NPI 1467872739) is an individual critical care medicine provider in Port Jefferson, New York, licensed in New York (302485) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Vassar Brothers Medical Center, and maintains a secondary practice location in Stony Brook.

NPPES Registry Identity

NPI1467872739
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameDR. GLEN THOMAS GRANATICredential: M.D.
Location AddressMATHER HOSPITAL, 75 N COUNTRY RDPort Jefferson, NY 11777
Mailing AddressMather Hospital, 75 North Country Rd, Intensivist DepartmentPort Jefferson, NY 11777 · (631) 473-1320
Phone(631) 473-1320
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateApril 24, 2014
Last NPPES UpdateSeptember 10, 2020
NPPES CertifiedSeptember 9, 2020
✔ NPI 1467872739 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in NY · 302485
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License 302485 (NY)
MATHER HOSPITAL, 75 N COUNTRY RD, Port Jefferson, NY 11777
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Secondary Practice Location 1

Location 1Dept. of Medicine, HSC Level 16, SUNY Stony BrookStony Brook, NY 11794 · Phone (631) 444-7411 · Fax (631) 444-2493

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. Glen Thomas Granati M.d. 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 ID4486993441
PECOS Enrollment IDI20200917002215
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

4

Medicare enrollment records show Glen Granati reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

John T. Mather Memorial Hospital
Same address
Psychiatry
75 N COUNTRY RD
Port Jefferson Station, NY 11777
  • Reassigned Medicare billing, New York enrollment
  • Also billed through NPI 1467249334 (New York)
  • 232 clinicians in this Medicare group
NPI 1376642371 (631) 473-1320
North Shore-Lij Medical PC
36 mi
Urology
1010 NORTHERN BLVD STE 110
Great Neck, NY 11021
  • Reassigned Medicare billing, New York enrollment
  • 9,353 clinicians in this Medicare group
NPI 1053688572 (516) 321-7400
Icahn School Of Medicine At Mount Sinai
46 mi
Anesthesiology
7901 BROADWAY
Elmhurst, NY 11373
  • Reassigned Medicare billing, New York enrollment
  • 836 clinicians in this Medicare group
NPI 1063766038 (718) 334-1591
Nuvance Health Medical Practice PC
69 mi
Internal Medicine
45 READE PLACE
Poughkeepsie, NY 12601
  • Reassigned Medicare billing, New York enrollment
  • 638 clinicians in this Medicare group
NPI 1437358033 (845) 475-9661

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

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
94 services45 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
88 services51 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
29 services27 patients
Test to determine lung volumes using sensors 94726
This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.
18 services18 patients
Test to examine how well the lungs exchange gases 94729
This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.
17 services17 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
17 services16 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Vassar Brothers Medical Center

Acute Care Hospitals · Poughkeepsie, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330023
Location45 Reade PlacePoughkeepsie, NY 12601 · Dutchess County
Emergency services Birthing friendly

Northern Dutchess Hospital

Acute Care Hospitals · Rhinebeck, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330049
Location6511 Springbrook AvenueRhinebeck, NY 12572 · Dutchess County
Emergency services Birthing friendly

Elmhurst Hospital Center

Acute Care Hospitals · Elmhurst, NY
2/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number330128
Location79-01 BroadwayElmhurst, NY 11373 · Queens County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11777 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.25/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality74.92
Promoting Interoperability91.67
Improvement Activities40

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 Glen Granati's NPI number?

The NPI number for Glen Granati is 1467872739. It was assigned to this individual provider in the NPPES registry on April 24, 2014.

Where is Glen Granati located?

Glen Granati practices at Mather Hospital, 75 N Country Rd, Port Jefferson, NY 11777. The listed phone number is (631) 473-1320.

What is Glen Granati's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Glen Granati enrolled in Medicare?

Yes. Glen Granati 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 organizations bill Medicare for Glen Granati's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Glen Granati reassigns Medicare benefits to 4 organizations: John T. Mather Memorial Hospital (Port Jefferson Station, NY), North Shore-Lij Medical PC (Great Neck, NY), Icahn School Of Medicine At Mount Sinai (Elmhurst, NY) and Nuvance Health Medical Practice PC (Poughkeepsie, NY). 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 Glen Granati's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Glen Granati affiliated with any hospitals?

According to CMS data, Glen Granati is affiliated with Vassar Brothers Medical Center, Northern Dutchess Hospital and Elmhurst Hospital Center.

When was this NPI record last updated?

The NPPES record for Glen Granati was last updated on September 10, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.