2026 NPPES data Hospitalist Physician NPI 1245649441 M.D.
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Serena Grewal, M.D.

Hospitalist Physician in Hartford, Connecticut.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,825 in Hospitalist Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Serena Grewal, M.D. is a Hospitalist Physician in Hartford, Connecticut, 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)

Serena Grewal, M.D. 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 Serena Grewal, M.D.?

Quality data not reported

NPI registry status

Active

Issued 08/13/2014

NPI 1245649441

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Specialty distribution in Connecticut

How Hospitalist Physician compares to other specialties among Connecticut providers

Connecticut providers
Clinical Social Worker - 8.4%Clinical Social Worker8.4%Student in an Organized Health Care Education/Training Program - 7.7%Student in an Organized Health Care Education/Training Program7.7%Physical Therapist - 4.2%Physical Therapist4.2%Pharmacist - 3.9%Pharmacist3.9%Internal Medicine Physician - 3.4%Internal Medicine Physician3.4%Mental Health Counselor - 3.2%Mental Health Counselor3.2%Hospitalist Physician - 0.4%Hospitalist Physician0.4%
Largest specialties in Connecticut (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hospitalist Physician. Verify directly:

How MIPS and board certification work

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).

Serena Grewal, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 114 WOODLAND ST, Hartford, CT, 06105, with a listed phone of (860) 714-4000. NPI 1245649441 was issued on 08/13/2014.

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 Hospitalist Physician providers operate outside Part D entirely.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

114 WOODLAND ST
Hartford, CT 06105

Provider Details

NPI 1245649441
Specialty Hospitalist Physician
Credentials M.D.
Gender Female
NPI Issued 08/13/2014

Hospital and facility affiliations

Facilities where Serena Grewal, M.D. 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.

Maimonides Medical Center Maimonides Primary Care Fpp
Brooklyn, NY

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

Hospitalist Physician Overview

How Serena Grewal, M.D. fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

Nearby Hospitalist Physician Providers in Connecticut

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

Compare Hospitalist Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Connecticut medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Hospitalist Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Serena Grewal, M.D.'s specialty?
Serena Grewal, M.D. specializes in Hospitalist Physician and practices in Hartford, Connecticut. Credentials: M.D..
Where is Serena Grewal, M.D. located?
Serena Grewal, M.D. is located at 114 WOODLAND ST, Hartford, CT, 06105. Phone: (860) 714-4000.
What is Serena Grewal, M.D.'s NPI number?
Serena Grewal, M.D.'s National Provider Identifier (NPI) is 1245649441, issued on 08/13/2014.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
Does Serena Grewal, M.D. accept Medicare?
Serena Grewal, M.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Serena Grewal, M.D.'s credentials?
Serena Grewal, M.D.'s NPI is 1245649441 with credentials M.D.. 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

View source datasets and methodology notes
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

Compiled from official public sources by the PlainDoctor editorial team.