MUHAMMAD KHURRAM PERWAIZ
NPI 1902044464
Internal Medicine in Stony Brook, NY

Q: What is Muhammad Perwaiz's NPI number?

The NPI number for Muhammad Perwaiz is 1902044464. It was assigned to this individual provider in the NPPES registry on January 21, 2009.

Q: What is Muhammad Perwaiz's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Muhammad Perwaiz was last updated on December 13, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since January 21, 2009PECOS EnrolledAccepts Medicare Assignment

STONY BROOK MEDICAL CTR, HSC T17-040, STONY BROOK, NY 11794(631) 444-1776 Get Directions Write a Review

NPPES record last updated: December 13, 2015. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Muhammad Khurram Perwaiz NPPES

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

MUHAMMAD KHURRAM PERWAIZ (NPI 1902044464) is an individual internal medicine provider in Stony Brook, New York, licensed in New York (265040) and active in the NPI registry since January 2009. He is enrolled in Medicare PECOS, is affiliated with Elmhurst Hospital Center, and is a graduate of Other (2003).

NPPES Registry Identity

NPI1902044464

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameMUHAMMAD KHURRAM PERWAIZ

Location AddressSTONY BROOK MEDICAL CTR, HSC T17-040Stony Brook, NY 11794-8172

Mailing AddressPo Box 1554Stony Brook, NY 11790-0988 · (646) 764-5325

Phone(631) 444-1776

Sole ProprietorNo

Medical School CMSOtherGraduated 2003

Enumeration DateJanuary 21, 2009

Last NPPES UpdateDecember 13, 2015

✔ NPI 1902044464 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in NY · 265040✔ Licensed in NY · 003510

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

STONY BROOK MEDICAL CTR, Stony Brook, NY 11794

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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 and accepts Medicare assignment

Muhammad Khurram Perwaiz 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 ID42480204

PECOS Enrollment IDI20110825000078

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

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

Chs Physician Partners, P.C

13 mi

Family Medicine

213 MONTAUK HWY
West Sayville, NY 11796

Reassigned Medicare billing, New York enrollment
Medicare enrollment name: Chs Physician Partners PC
944 clinicians in this Medicare group

NPI 1679823512 (631) 563-6205

Good Samaritan Hospital Medical Center

15 mi

Medical Specialty

15 PARK AVE
Bay Shore, NY 11706

Reassigned Medicare billing, New York enrollment
395 clinicians in this Medicare group

NPI 1275820961 (631) 617-5250

Amityville Pulmonology PLLC

22 mi

Pulmonary Disease

317 BROADWAY STE A
Amityville, NY 11701

Reassigned Medicare billing, New York enrollment
11 clinicians in this Medicare group

NPI 1154423622 (631) 598-5864

Icahn School Of Medicine At Mount Sinai

42 mi

Anesthesiology

7901 BROADWAY
Elmhurst, NY 11373

Reassigned Medicare billing, New York enrollment
836 clinicians in this Medicare group

NPI 1063766038 (718) 334-1591

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.

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.

452 services281 patients

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.

139 services86 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.

113 services82 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.

64 services63 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

19 services14 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

18 services18 patients

Hospital Affiliations CMS Care Compare 3

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

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

Good Samaritan Hospital Medical Center

Acute Care Hospitals · West Islip, NY

1/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number330286

Location1000 Montauk HighwayWest Islip, NY 11795 · Suffolk County

Emergency services Birthing friendly

Chsli St Joseph Hospital

Acute Care Hospitals · Bethpage, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330332

Location4295 Hempstead TurnpikeBethpage, NY 11714 · Nassau County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11794 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.

Other Providers at the Same Location NPPES 7

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

SEJAL KOTHARI M.D.

Student in an Organized Health Care Education/Training Program

STONY BROOK MEDICAL CTR, DEPARTMENT OF PEDIATRICS
STONY BROOK, NY 11794

Suffolk County (631) 444-2020

YUPO MA MD PHD

Pathology (Anatomic Pathology & Clinical Pathology)

STONY BROOK MEDICAL CTR, DEPARTMENT OF PATHOLOGY
STONY BROOK, NY 11794

Suffolk County (631) 444-2241

MS. JOAN C SAMUELS PA

Physician Assistant

STONY BROOK MEDICAL CTR, EMPLOYEE HEALTH SERVICE
STONY BROOK, NY 11794

Suffolk County (631) 444-7767

MRS. CHRISTANA CAINES DNP

Nurse Practitioner (Acute Care)

STONY BROOK MEDICAL CTR, HSC LEVEL 19 ROOM 080
STONY BROOK, NY 11794

Suffolk County (631) 444-1820

ANDREW TYLER BATES

Surgery

STONY BROOK MEDICAL CTR, HEALTH SCIENCES TOWER, T18-040
STONY BROOK, NY 11794

Suffolk County (631) 450-0167

MRS. JOANNE ELAINE CLYDE NP

Nurse Practitioner (Adult Health)

STONY BROOK MEDICAL CTR, 101 NICOLLS ROAD
STONY BROOK, NY 11794

Suffolk County (631) 444-2903

DR. ROBERT S LEVY MD

Emergency Medicine

STONY BROOK MEDICAL CTR, HSC LEVEL 4 ROOM 080
STONY BROOK, NY 11794

Suffolk County (631) 444-2499

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 Muhammad Perwaiz's NPI number?

The NPI number for Muhammad Perwaiz is 1902044464. It was assigned to this individual provider in the NPPES registry on January 21, 2009.

Where is Muhammad Perwaiz located?

Muhammad Perwaiz practices at Stony Brook Medical Ctr Hsc T17-040, Stony Brook, NY 11794. The listed phone number is (631) 444-1776.

What is Muhammad Perwaiz's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Muhammad Perwaiz enrolled in Medicare?

Yes. Muhammad Perwaiz 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 Muhammad Perwaiz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Muhammad Perwaiz reassigns Medicare benefits to 4 organizations: Chs Physician Partners, P.C (West Sayville, NY), Good Samaritan Hospital Medical Center (Bay Shore, NY), Amityville Pulmonology PLLC (Amityville, NY) and Icahn School Of Medicine At Mount Sinai (Elmhurst, 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 Muhammad Perwaiz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Muhammad Perwaiz affiliated with any hospitals?

According to CMS data, Muhammad Perwaiz is affiliated with Elmhurst Hospital Center, Good Samaritan Hospital Medical Center and Chsli St Joseph Hospital.

When was this NPI record last updated?

The NPPES record for Muhammad Perwaiz was last updated on December 13, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.