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DR. MARK WILLIAMS MBBS
NPI 1295178242
Anesthesiology in Rochester, NY

Active since April 09, 2013PECOS EnrolledAccepts Medicare Assignment
74.41/100
CMS Quality Rating
UNIVERSITY OF ROCHESTER MEDICAL CTR, 601 ELMWOOD AVE, BOX 604, ROCHESTER, NY 14642(585) 275-1384 Get Directions Write a Review

NPPES record last updated: July 7, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 7, 2023, Dec 8, 2017 (2 updates tracked since 2017).

About Dr. Mark Williams Mbbs NPPES

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

DR. MARK WILLIAMS MBBS (NPI 1295178242) is an individual anesthesiology provider in Rochester, New York, licensed in New York (286923) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with F F Thompson Hospital, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1295178242
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. MARK WILLIAMSCredential: MBBS
Location AddressUNIVERSITY OF ROCHESTER MEDICAL CTR, 601 ELMWOOD AVE, BOX 604Rochester, NY 14642-0001
Mailing Address601 Elmwood Ave Box 604Rochester, NY 14642-0001
Phone(585) 275-1384
Sole ProprietorNo
Medical School CMSOtherGraduated 2007
Enumeration DateApril 9, 2013
Last NPPES UpdateJuly 7, 20232 updates tracked since enumeration
✔ NPI 1295178242 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in NY · 286923
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedPhysician Assistant · MedicalTaxonomy 363AM0700X · License 286923 (NY)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
UNIVERSITY OF ROCHESTER MEDICAL CTR, Rochester, NY 14642
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark Williams Mbbs 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 ID941593388
PECOS Enrollment IDI20170802000131
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.

Areas of Expertise CMS Part B claims

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.
122 services69 patients

Hospital Affiliations CMS Care Compare 2

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

F F Thompson Hospital

Acute Care Hospitals · Canandaigua, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330074
Location350 Parrish StreetCanandaigua, NY 14424 · Ontario County
Emergency services Birthing friendly

Strong Memorial Hospital

Acute Care Hospitals · Rochester, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330285
Location601 Elmwood AveRochester, NY 14642 · Monroe County
Emergency services Birthing friendly

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.

74.41/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality76.58
Promoting Interoperability100
Improvement Activities40
Cost16.86

Other Providers at the Same Location NPPES 15

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

ROBERT M KOTTMANN M.D.
Internal Medicine (Pulmonary Disease)
UNIVERSITY OF ROCHESTER MEDICAL CTR, 601 ELMWOOD AVENUE
ROCHESTER, NY 14642
Monroe County (585) 275-4861
NISHA PATEL MD
Student in an Organized Health Care Education/Training Program
UNIVERSITY OF ROCHESTER MEDICAL CTR, 601 ELMWOOD AVENUE, BOX 626
ROCHESTER, NY 14642
Monroe County (585) 273-4580
APEKSHA CHATURVEDI MD
Radiology (Pediatric Radiology)
UNIVERSITY OF ROCHESTER MEDICAL CTR, 601 ELMWOOD AVENUE
ROCHESTER, NY 14642
Monroe County (585) 275-2734
ERNESTINE IONA BROWN
Nurse Practitioner (Family)
UNIVERSITY OF ROCHESTER MEDICAL CTR, 601 ELMWOOD AVE
ROCHESTER, NY 14642
Monroe County (585) 275-2100
HANI KATERJI
Pathology (Anatomic Pathology & Clinical Pathology)
UNIVERSITY OF ROCHESTER MEDICAL CTR, 601 ELMWOOD AVENUE, BOX 626
ROCHESTER, NY 14642
Monroe County (585) 273-4580
MR. JOHN H HERRMANN JR. LMHC
Counselor (Mental Health)
UNIVERSITY OF ROCHESTER MEDICAL CTR, 300 CRITTENDEN BLVD., BOX PSYCHIATRY
ROCHESTER, NY 14642
Monroe County (585) 275-6740
DR. PHILIP JAY KATZMAN M.D.
Pathology (Anatomic Pathology)
UNIVERSITY OF ROCHESTER MEDICAL CTR, 601 ELMWOOD AVE, BOX 626
ROCHESTER, NY 14642
Monroe County (585) 273-4091
DR. MANI ABRAHAM KURIEN M.D.
Psychiatry & Neurology (Psychiatry)
UNIVERSITY OF ROCHESTER MEDICAL CTR, 300 CRITTENDEN BLVD
ROCHESTER, NY 14642
Monroe County (585) 275-3641

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 Mark Williams's NPI number?

The NPI number for Mark Williams is 1295178242. It was assigned to this individual provider in the NPPES registry on April 9, 2013.

Where is Mark Williams located?

Mark Williams practices at University Of Rochester Medical Ctr 601 Elmwood Ave, Box 604, Rochester, NY 14642. The listed phone number is (585) 275-1384.

What is Mark Williams's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Mark Williams enrolled in Medicare?

Yes. Mark Williams 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.

Is Mark Williams affiliated with any hospitals?

According to CMS data, Mark Williams is affiliated with F F Thompson Hospital and Strong Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Mark Williams was last updated on July 7, 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.