NATHANIEL D BAYER M.D.
NPI 1508246265
Hospitalist in Rochester, NY

Q: What is Nathaniel Bayer's NPI number?

The NPI number for Nathaniel Bayer is 1508246265. It was assigned to this individual provider in the NPPES registry on June 8, 2015.

Q: What is Nathaniel Bayer's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Nathaniel Bayer was last updated on June 30, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 June 08, 2015PECOS Enrolled

601 ELMWOOD AVE, ROCHESTER, NY 14642(585) 276-4113(585) 461-1231 Get Directions Write a Review

NPPES record last updated: June 30, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Nathaniel D Bayer M.d. NPPES

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

NATHANIEL D BAYER M.D. (NPI 1508246265) is an individual hospitalist provider in Rochester, New York, licensed in New York (292895) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS and maintains a secondary practice location in Philadelphia.

NPPES Registry Identity

NPI1508246265

Entity TypeIndividualMale

Primary Taxonomy208M00000X

Provider Legal NameNATHANIEL D BAYERCredential: M.D.

Location Address601 ELMWOOD AVERochester, NY 14642

Mailing Address601 Elmwood Ave Box 635Rochester, NY 14642-0001 · (585) 276-4113 · Fax (585) 461-1231

Phone(585) 276-4113

Fax(585) 461-1231

Sole ProprietorNo

Enumeration DateJune 8, 2015

Last NPPES UpdateJune 30, 2023

✔ NPI 1508246265 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in NY · 292895

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedPediatricsTaxonomy 208000000X · License MT208119 (PA)

601 ELMWOOD AVE, Rochester, NY 14642

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Secondary Practice Location 1

Location 13401 Civic Center Blvd, Children's Hosp of Philadelphia, 9NW, Room 55Philadelphia, PA 19104-4319 · Phone (215) 590-1220

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nathaniel D Bayer 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 Reassignments

Medicare enrollment records show Nathaniel Bayer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pediatric Group Univ Of Rochester

Same address

Pediatric Hematology-Oncology

601 ELMWOOD AVE
Rochester, NY 14642

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

NPI 1083271787 (585) 275-2981

University Of Rochester

Same address

General Acute Care Hospital

601 ELMWOOD AVE, BOX 684
Rochester, NY 14642

Reassigned Medicare billing, New York enrollment
1,624 clinicians in this Medicare group

NPI 1346285657 (585) 275-2100

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 14642 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

$126.40 typical visit price

range $54.87 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.08 typical visit price

range $17.54 – $136.14

Typical copayment $24.27 (range $4.38 – $34.03)

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 20

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

CARIE E BRADT RPA-C

Physician Assistant

601 ELMWOOD AVE
ROCHESTER, NY 14642

Monroe County (585) 275-6070

DR. RITA DADIZ DO

Pediatrics (Neonatal-Perinatal Medicine)

601 ELMWOOD AVE, BOX 635
ROCHESTER, NY 14642

Monroe County (585) 275-7787

DR. SCOTT ROSS SCHIFFMAN M.D.

Radiology (Diagnostic Radiology)

601 ELMWOOD AVE, BOX 648
ROCHESTER, NY 14642

Monroe County (585) 275-1128

SARAH ANNE ROSSI FNP

Nurse Practitioner (Family)

601 ELMWOOD AVE, BOX 652
ROCHESTER, NY 14642

Monroe County (585) 279-5100

JIMENA CUBILLOS MD

Urology (Pediatric Urology)

601 ELMWOOD AVE, BOX 656
ROCHESTER, NY 14642

Monroe County (585) 275-3342

MRS. ANNE SCHERBERGER KEEFER RN NP

Nurse Practitioner (Adult Health)

601 ELMWOOD AVE, BOX 704
ROCHESTER, NY 14642

Monroe County (585) 275-5307

SCOTT OVERHOLT DDS

Student in an Organized Health Care Education/Training Program

601 ELMWOOD AVE, BOX 705
ROCHESTER, NY 14642

Monroe County (585) 275-7978

MS. SARAH L AVERILL MD

Radiology (Diagnostic Radiology)

601 ELMWOOD AVE
ROCHESTER, NY 14642

Monroe County (585) 275-2100

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 Nathaniel Bayer's NPI number?

The NPI number for Nathaniel Bayer is 1508246265. It was assigned to this individual provider in the NPPES registry on June 8, 2015.

Where is Nathaniel Bayer located?

Nathaniel Bayer practices at 601 Elmwood Ave, Rochester, NY 14642. The listed phone number is (585) 276-4113.

What is Nathaniel Bayer's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Nathaniel Bayer enrolled in Medicare?

Yes. Nathaniel Bayer is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Nathaniel Bayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Bayer reassigns Medicare benefits to 2 organizations: Pediatric Group Univ Of Rochester (Rochester, NY) and University Of Rochester (Rochester, 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 Nathaniel Bayer'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 Nathaniel Bayer was last updated on June 30, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.