MATTHEW DREW GRUNWALD M.D.
NPI 1689061954
Internal Medicine - Gastroenterology in Portland, ME

Q: What is Matthew Grunwald's NPI number?

The NPI number for Matthew Grunwald is 1689061954. It was assigned to this individual provider in the NPPES registry on April 23, 2015.

Q: What is Matthew Grunwald'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 Matthew Grunwald was last updated on December 19, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since April 23, 2015PECOS EnrolledAccepts Medicare Assignment

98.06/100

CMS Quality Rating

161 MARGINAL WAY, PORTLAND, ME 04101(207) 773-7964(207) 773-9073 Get Directions Write a Review

NPPES record last updated: December 19, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 19, 2022, Sep 13, 2022, Sep 8, 2022 (3 updates tracked since 2022).

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About Matthew Drew Grunwald M.d. NPPES

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

MATTHEW DREW GRUNWALD M.D. (NPI 1689061954) is an individual gastroenterology provider in Portland, Maine, licensed in Maine (MD25916) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and maintains a secondary practice location in Portland.

NPPES Registry Identity

NPI1689061954

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameMATTHEW DREW GRUNWALDCredential: M.D.

Location Address161 MARGINAL WAYPortland, ME 04101-2438

Mailing Address161 Marginal WayPortland, ME 04101-2438 · (207) 773-7964 · Fax (207) 773-9073

Phone(207) 773-7964

Fax(207) 773-9073

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateApril 23, 2015

Last NPPES UpdateDecember 19, 20223 updates tracked since enumeration

NPPES CertifiedDecember 19, 2022

✔ NPI 1689061954 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 ME · MD25916

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.

161 MARGINAL WAY, Portland, ME 04101

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Secondary Practice Location 1

Location 148 Gilman StPortland, ME 04102-3004 · Phone (207) 661-4400

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Shield.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

Matthew Drew Grunwald 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 ID5395080360

PECOS Enrollment IDI20220727000155

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 10

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

246 services98 patients

Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito G0500

Moderate sedation is a method where a physician uses medication to help you relax during a gastrointestinal endoscopy. An independent trained observer will be present to monitor your vital signs and ensure your safety throughout the procedure. It's a common and safe practice.

92 services91 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

86 services86 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.

60 services60 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.

41 services31 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

23 services23 patients

Hospital Affiliations CMS Care Compare 2

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

Maine Medical Center

Acute Care Hospitals · Portland, ME

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number200009

Location22 Bramhall StPortland, ME 04102 · Cumberland County

Emergency services Birthing friendly

Memorial Hospital, The

Critical Access Hospitals · North Conway, NH

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number301307

Location3073 White Mountain HighwayNorth Conway, NH 03860 · Carroll County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04101 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

$128.83 typical visit price

range $56.28 – $169.96

Typical copayment $32.20 (range $14.07 – $42.49)

Most-billed visit code 99204

Established Patient

$99.18 typical visit price

range $18.22 – $138.92

Typical copayment $24.79 (range $4.55 – $34.73)

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.

98.06/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

86.13

Promoting Interoperability

100

Improvement Activities

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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.

LUCY A MACK FNP

Nurse Practitioner (Family)