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DR. MARY CAROLYN GAMACHE M.D.
NPI 1639176860
Internal Medicine - Cardiovascular Disease in Saint Louis, MO

Active since July 01, 2005PECOS EnrolledAccepts Medicare Assignment
450 N NEW BALLAS RD, SUITE 170, SAINT LOUIS, MO 63141(314) 993-6969(314) 993-0792 Get Directions Write a Review

NPPES record last updated: June 10, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Mary Carolyn Gamache M.d. NPPES

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

DR. MARY CAROLYN GAMACHE M.D. (NPI 1639176860) is an individual cardiovascular disease provider in Saint Louis, Missouri, licensed in Missouri (R6H99) and active in the NPI registry since July 2005. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Saint Louis University School Of Medicine (1985).

NPPES Registry Identity

NPI1639176860
Entity TypeIndividualFemale
Primary Taxonomy207RC0000X
Provider Legal NameDR. MARY CAROLYN GAMACHECredential: M.D.
Location Address450 N NEW BALLAS RD, SUITE 170Saint Louis, MO 63141-6835
Mailing Address450 N New Ballas Rd, Suite 170Saint Louis, MO 63141-6835 · (314) 993-6969 · Fax (314) 993-0792
Phone(314) 993-6969
Fax(314) 993-0792
Sole ProprietorNo
Medical School CMSSaint Louis University School Of MedicineGraduated 1985
Enumeration DateJuly 1, 2005
Last NPPES UpdateJune 10, 2011
✔ NPI 1639176860 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in MO · R6H99
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedNuclear Medicine · Nuclear CardiologyTaxonomy 207UN0901X · License R6H99 (MO)
450 N NEW BALLAS RD, Saint Louis, MO 63141
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Other Names 1

Professional Name (2)Dr. M. Carolyn Gamache M.d.

Other Identifiers 3

Medicare UPINE64648MO
Medicare PIN012012206MO
Medicaid203017025MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and more.Insurance ›

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. Mary Carolyn Gamache 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 ID8921148545
PECOS Enrollment IDI20091211000608
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 5

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
399 services202 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
279 services270 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
217 services162 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
21 services21 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 services14 patients

Hospital Affiliations CMS Care Compare

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

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260020
Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63141 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
Most-billed visit code 99213
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.

HHC ASC, LLC
Clinic/Center (Ambulatory Surgical)
450 N NEW BALLAS RD, STE. 206 SOUTH WING
SAINT LOUIS, MO 63141
St. Louis County (314) 993-6969
MARK F. HESKER, D.D.S., P.C.
Dentist (General Practice)
450 N NEW BALLAS RD, SUITE #200
SAINT LOUIS, MO 63141
St. Louis County (314) 569-3337
BALLAS OUTPATIENT SURGERY CENTER LP
Clinic/Center (Ambulatory Surgical)
450 N NEW BALLAS RD, STE 103
SAINT LOUIS, MO 63141
St. Louis County (314) 991-0776
THE HEART HEALTH CENTER CATH LAB, LLC
Internal Medicine (Cardiovascular Disease)
450 N NEW BALLAS RD, STE 170W
SAINT LOUIS, MO 63141
St. Louis County (314) 993-6969
MS. SUSAN RATHGEB AUD
Audiologist
450 N NEW BALLAS RD, DEPT OTOLARYNGOLOGY, STE 140
SAINT LOUIS, MO 63141
St. Louis County (314) 362-7509
DR. STEPHEN J PIEPER MD
Internal Medicine (Clinical Cardiac Electrophysiology)
450 N NEW BALLAS RD, STE 270 W
SAINT LOUIS, MO 63141
St. Louis County (314) 991-6969
ORTHO SPORT & SPINE PHYSICIANS OF MISSOURI, LLC
Physical Medicine & Rehabilitation
450 N NEW BALLAS RD
CREVE COEUR, MO 63141
St. Louis County (314) 390-0135
HHC HEALTH CARE, LLC
Internal Medicine (Cardiovascular Disease)
450 N NEW BALLAS RD, STE 270 WEST WING
SAINT LOUIS, MO 63141
St. Louis County (314) 993-6969

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 Mary Gamache's NPI number?

The NPI number for Mary Gamache is 1639176860. It was assigned to this individual provider in the NPPES registry on July 1, 2005. The provider is also known as Dr. M. Carolyn Gamache M.D..

Where is Mary Gamache located?

Mary Gamache practices at 450 N New Ballas Rd Suite 170, Saint Louis, MO 63141. The listed phone number is (314) 993-6969.

What is Mary Gamache's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Mary Gamache enrolled in Medicare?

Yes. Mary Gamache 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.

What insurance does Mary Gamache accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 4 other insurers list Mary Gamache as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mary Gamache affiliated with any hospitals?

According to CMS data, Mary Gamache is affiliated with Mercy Hospital St Louis.

When was this NPI record last updated?

The NPPES record for Mary Gamache was last updated on June 10, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.