MR. MARK STEPHEN ST MARIE MD
NPI 1629150792
Internal Medicine - Gastroenterology in Williamsville, NY

Q: What is Mark St Marie's NPI number?

The NPI number for Mark St Marie is 1629150792. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Q: What is Mark St Marie's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark St Marie was last updated on August 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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 October 19, 2006PECOS EnrolledAccepts Medicare Assignment

111 N MAPLEMERE RD STE 200, WILLIAMSVILLE, NY 14221(716) 626-2644 Get Directions Write a Review

NPPES record last updated: August 27, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 30, 2022, Jan 20, 2016 (2 updates tracked since 2016).

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About Mr. Mark Stephen St Marie Md NPPES

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

MR. MARK STEPHEN ST MARIE MD (NPI 1629150792) is an individual gastroenterology provider in Williamsville, New York, licensed in New York (136312) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Sisters Of Charity Hospital, and is a graduate of Other (1976).

NPPES Registry Identity

NPI1629150792

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameMR. MARK STEPHEN ST MARIECredential: MD

Location Address111 N MAPLEMERE RD STE 200Williamsville, NY 14221-3182

Mailing Address111 N Maplemere Rd Ste 200Williamsville, NY 14221-3182 · (716) 626-2644

Phone(716) 626-2644

Sole ProprietorYes

Medical School CMSOtherGraduated 1976

Enumeration DateOctober 19, 2006

Last NPPES UpdateAugust 27, 20242 updates tracked since enumeration

NPPES CertifiedAugust 21, 2024

✔ NPI 1629150792 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 · 136312

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.

111 N MAPLEMERE RD STE 200, Williamsville, NY 14221

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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

Mr. Mark Stephen St Marie 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 ID2567448822

PECOS Enrollment IDI20120223000556

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 3

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 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.

77 services53 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

39 services30 patients

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.

15 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Sisters Of Charity Hospital

Acute Care Hospitals · Buffalo, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330078

Location2157 Main StreetBuffalo, NY 14214 · Erie County

Emergency services Birthing friendly

Mercy Hospital Of Buffalo

Acute Care Hospitals · Buffalo, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330279

Location565 Abbott RoadBuffalo, NY 14220 · Erie County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14221 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 6

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

MRS. COURTNEY MARIE CARDINAL-KARP PHARMD

Pharmacist