2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1922268168 DO
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TERESA MAY, DO

Critical Care Medicine (Internal Medicine) Physician in SOUTH PORTLAND, Maine. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.

What the federal data shows

TERESA MAY, DO is a Critical Care Medicine (Internal Medicine) Physician in SOUTH PORTLAND, Maine, listed in the federal CMS National Provider Identifier registry.

Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

Board certification likely (heuristic — not verified)

TERESA MAY, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about TERESA MAY, DO?

Quality data not reported

NPI registry status

Active

Issued 06/11/2008

NPI 1922268168

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Specialty distribution in Maine

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Maine providers

Maine providers

Critical Care Medicine (Internal Medicine) Physician share within Maine

1. Critical Care Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine (Internal Medicine) Physician share within Maine

Specialty board-certification context

Estimated specialty board-certified rate — Critical Care Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Critical Care Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

TERESA MAY, DO appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding DO credentials at 100 FODEN RD, SOUTH PORTLAND, ME, 04106, with a listed phone of (207) 828-1122. NPI 1922268168 was issued on 06/11/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MAY most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Critical Care Medicine (Internal Medicine) Physician providers operate outside Part D entirely.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

100 FODEN RD
SOUTH PORTLAND, ME 04106

Provider Details

NPI 1922268168
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials DO
Gender Female
NPI Issued 06/11/2008

Hospital and facility affiliations

Facilities where TERESA MAY, DO bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

CHEST MEDICINE ASSOCIATES PA
SOUTH PORTLAND, ME

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Critical Care Medicine (Internal Medicine) Physician Overview

How TERESA MAY, DO fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Maine

Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as MAY.

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is TERESA MAY, DO's specialty?
TERESA MAY, DO specializes in Critical Care Medicine (Internal Medicine) Physician and practices in SOUTH PORTLAND, Maine. Credentials: DO.
Where is TERESA MAY, DO located?
TERESA MAY, DO is located at 100 FODEN RD, SOUTH PORTLAND, ME, 04106. Phone: (207) 828-1122.
What is TERESA MAY, DO's NPI number?
TERESA MAY, DO's National Provider Identifier (NPI) is 1922268168, issued on 06/11/2008.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
Does TERESA MAY, DO accept Medicare?
TERESA MAY, DO appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TERESA MAY, DO's credentials?
TERESA MAY, DO's NPI is 1922268168 with credentials DO. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology