DR. CEAN MAHMUD M.D.
NPI 1285165134
Family Medicine in Riverhead, NY

Q: What is Cean Mahmud's NPI number?

The NPI number for Cean Mahmud is 1285165134. It was assigned to this individual provider in the NPPES registry on March 22, 2017.

Q: What is Cean Mahmud's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Cean Mahmud was last updated on April 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since March 22, 2017PECOS EnrolledAccepts Medicare Assignment

91.25/100

CMS Quality Rating

31 MAIN RD STE 1, RIVERHEAD, NY 11901(631) 722-4400 Get Directions Write a Review

NPPES record last updated: April 18, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 18, 2026, Jul 24, 2023, Jul 15, 2020 and 1 more (4 updates tracked since 2017).

On this page

About Dr. Cean Mahmud M.d. NPPES

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

DR. CEAN MAHMUD M.D. (NPI 1285165134) is an individual family medicine provider in Riverhead, New York, licensed in New York (305318) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS, is affiliated with Peconic Bay Medical Center, and maintains a secondary practice location in Port Jefferson.

NPPES Registry Identity

NPI1285165134

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. CEAN MAHMUDCredential: M.D.

Location Address31 MAIN RD STE 1Riverhead, NY 11901-1953

Mailing Address70 N Country Rd Ste 105Port Jefferson, NY 11777-2161 · (631) 392-8847

Phone(631) 722-4400

Sole ProprietorNo

Medical School CMSOtherGraduated 2016

Enumeration DateMarch 22, 2017

Last NPPES UpdateApril 18, 20264 updates tracked since enumeration

NPPES CertifiedApril 18, 2026

✔ NPI 1285165134 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in NY · 305318

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

Also ListedPediatricsTaxonomy 208000000X · License 305318 (NY)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

31 MAIN RD STE 1, Riverhead, NY 11901

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Secondary Practice Location 1

Location 170 N Country Rd Ste 105Port Jefferson, NY 11777-2161 · Phone (631) 392-8847

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. Cean Mahmud 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 ID2961748090

PECOS Enrollment IDI20200911002596, I20260216000599

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 Cean Mahmud reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Central Suffolk Hosptial

1.4 mi

Nurse Practitioner

1300 ROANOKE AVE
Riverhead, NY 11901

Reassigned Medicare billing, New York enrollment
Medicare enrollment name: Central Suffolk Hospital
134 clinicians in this Medicare group

NPI 1841637741 (631) 548-6101

Peconic Bay Primary Medical Care

7.1 mi

Internal Medicine

13400 MAIN RD
Mattituck, NY 11952

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

NPI 1487620613 (631) 298-4008

North Shore-Lij Medical PC

57 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

New York University

1,079 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.

Areas of Expertise CMS Part B claims 16

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

475 services229 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

142 services106 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.

140 services113 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

96 services96 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

67 services66 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

62 services52 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

56 services56 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

50 services50 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

48 services48 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

39 services39 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

39 services39 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.

30 services30 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

22 services22 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

18 services17 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

17 services14 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Peconic Bay Medical Center

Acute Care Hospitals · Riverhead, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number330107

Location1 Heros WayRiverhead, NY 11901 · Suffolk County

Emergency services Birthing friendly

Suny/Stony Brook University Hospital

Acute Care Hospitals · Stony Brook, NY

4/5 CMS rating

OwnershipGovernment - State

CMS Certification Number330393

LocationHealth Sciences Center SunyStony Brook, NY 11794 · Suffolk County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11901 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

$105.06 typical visit price

range $67.40 – $203.53

Typical copayment $26.26 (range $16.85 – $50.88)

Most-billed visit code 99203

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

Quality

74.92

Promoting Interoperability

91.67

Improvement Activities

Other Providers at the Same Location NPPES 2

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

SARA ANN CERRONE M.D.

Internal Medicine (Gastroenterology)

31 MAIN RD STE 1
RIVERHEAD, NY 11901

Suffolk County (631) 298-4479

DEVASHREE PARMAR MD

Family Medicine

31 MAIN RD STE 1
RIVERHEAD, NY 11901

Suffolk County (631) 722-4400

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 Cean Mahmud's NPI number?

The NPI number for Cean Mahmud is 1285165134. It was assigned to this individual provider in the NPPES registry on March 22, 2017.

Where is Cean Mahmud located?

Cean Mahmud practices at 31 Main Rd Ste 1, Riverhead, NY 11901. The listed phone number is (631) 722-4400.

What is Cean Mahmud's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Cean Mahmud enrolled in Medicare?

Yes. Cean Mahmud 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 Cean Mahmud's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cean Mahmud reassigns Medicare benefits to 4 organizations: Central Suffolk Hosptial (Riverhead, NY), Peconic Bay Primary Medical Care (Mattituck, NY), North Shore-Lij Medical PC (Great Neck, NY) and New York University (Boynton Beach, FL). 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 Cean Mahmud's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Cean Mahmud affiliated with any hospitals?

According to CMS data, Cean Mahmud is affiliated with Peconic Bay Medical Center and Suny/Stony Brook University Hospital.

When was this NPI record last updated?

The NPPES record for Cean Mahmud was last updated on April 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.