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AARON Z TOKAYER MD
NPI 1336220755
Internal Medicine - Gastroenterology in Bronx, NY

Active since October 19, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
MMC - DEPT. OF MEDICINE, 111 EAST 210TH STREET, BRONX, NY 10467(866) 633-8255 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Aaron Z Tokayer Md NPPES

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

AARON Z TOKAYER MD (NPI 1336220755) is an individual gastroenterology provider in Bronx, New York, licensed in New York (172647) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Maimonides Medical Center, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (1986).

NPPES Registry Identity

NPI1336220755
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameAARON Z TOKAYERCredential: MD
Location AddressMMC - DEPT. OF MEDICINE, 111 EAST 210TH STREETBronx, NY 10467
Mailing Address630 Grenville AveTeaneck, NJ 07666-2123 · (866) 633-8255
Phone(866) 633-8255
Sole ProprietorNo
Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 1986
Enumeration DateOctober 19, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1336220755 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NY · 172647
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
MMC - DEPT. OF MEDICINE, Bronx, NY 10467
Open in Google Maps ↗

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

Aaron Z Tokayer Md 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 ID9032161070
PECOS Enrollment IDI20050217000529
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

3

Medicare enrollment records show Aaron Tokayer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Montefiore Medical Center
2.7 mi
Anesthesiology
111 E 210TH ST
Bronx, NY 10467
  • Reassigned Medicare billing, New York enrollment
  • 5,251 clinicians in this Medicare group
NPI 1063525152 (914) 378-6021
Maimonides Medical Center - Mmc Gastroenterology Fpp
17 mi
Gastroenterology
4802 10TH AVE
Brooklyn, NY 11219
  • Reassigned Medicare billing, New York enrollment
  • 27 clinicians in this Medicare group
NPI 1932216660 (718) 283-8773
Maimonides Faculty Practice Plan
17 mi
Internal Medicine
4802 10TH AVE
Brooklyn, NY 11219
  • Reassigned Medicare billing, New York enrollment
  • 1,177 clinicians in this Medicare group
NPI 1053344846 (718) 283-8700

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 11

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.
55 services40 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.
46 services43 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
34 services32 patients
Study of esophagus to assess movement 91010
This procedure, known as esophageal manometry, involves studying the esophagus or food pipe to evaluate its movement and pressure. It helps understand how well the esophagus can move food to the stomach. Involving a thin, flexible tube, it's a safe, minimally invasive test.
24 services24 patients
Monitoring and recording of esophageal function through nasal tube with electrode 91037
This procedure involves placing a thin tube with an electrode through your nose and into your esophagus. It helps to monitor and record the function of your esophagus, aiding in diagnosing any potential issues.
24 services24 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.
23 services23 patients

Hospital Affiliations CMS Care Compare

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

Maimonides Medical Center

Acute Care Hospitals · Brooklyn, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330194
Location4802 Tenth AvenueBrooklyn, NY 11219 · Kings County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10467 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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

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.

JOHN A HARDIN MD
Internal Medicine (Rheumatology)
MMC - DEPT. OF MEDICINE, 111 EAST 210TH STREET
BRONX, NY 10467
Bronx County (718) 920-8021
ANNA KITAYCHIK PA
Physician Assistant
MMC - DEPT. OF MEDICINE, 111 EAST 210TH STREET
BRONX, NY 10467
Bronx County (718) 920-2961
DR. PETER L ALPERT MD
Internal Medicine (Infectious Disease)
MMC - DEPT. OF MEDICINE, 3400 BAINBRIDGE AVENUE, 2ND FL
BRONX, NY 10467
Bronx County (718) 920-7364
GARY E KALKUT MD
Internal Medicine (Infectious Disease)
MMC - DEPT. OF MEDICINE, 111 EAST 210TH STREET
BRONX, NY 10467
Bronx County (718) 920-2809
ANDREW K KRUMERMAN MD
Internal Medicine (Clinical Cardiac Electrophysiology)
MMC - DEPT. OF MEDICINE, 111 EAST 210TH STREET
BRONX, NY 10467
Bronx County (718) 920-4776
WANDA HORN MD
Internal Medicine
MMC - DEPT. OF MEDICINE, 3400 BAINBRIDGE AVENUE
BRONX, NY 10467
Bronx County (718) 920-6721
SHIRLEY J FLETCHER-HALL PA
Physician Assistant
MMC - DEPT. OF MEDICINE, 111 EAST 210TH STREET
BRONX, NY 10467
Bronx County (718) 920-2869
DAVID J PREZANT MD
Internal Medicine (Pulmonary Disease)
MMC - DEPT. OF MEDICINE, 111 EAST 210TH STREET
BRONX, NY 10467
Bronx County (718) 920-6054

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 Aaron Tokayer's NPI number?

The NPI number for Aaron Tokayer is 1336220755. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Where is Aaron Tokayer located?

Aaron Tokayer practices at Mmc - Dept. Of Medicine 111 East 210th Street, Bronx, NY 10467. The listed phone number is (866) 633-8255.

What is Aaron Tokayer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Aaron Tokayer enrolled in Medicare?

Yes. Aaron Tokayer 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 Aaron Tokayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Tokayer reassigns Medicare benefits to 3 organizations: Montefiore Medical Center (Bronx, NY), Maimonides Medical Center - Mmc Gastroenterology Fpp (Brooklyn, NY) and Maimonides Faculty Practice Plan (Brooklyn, 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 Aaron Tokayer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Aaron Tokayer affiliated with any hospitals?

According to CMS data, Aaron Tokayer is affiliated with Maimonides Medical Center.

When was this NPI record last updated?

The NPPES record for Aaron Tokayer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.