2026 NPPES data Emergency Medicine Physician NPI 1336378991 M.D.
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GLEN BLOMSTROM, M.D.

Emergency Medicine Physician in WATERBURY, Connecticut. 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.
Prescribing volume
188
Medicare Part D claims · 89 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$25.46
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GLEN BLOMSTROM, M.D. is a Emergency Medicine Physician ([object Object]) practicing in WATERBURY, Connecticut with a Medicare Part D prescribing footprint of 188 claims across 89 beneficiaries — 13% brand-name prescribing . Industry payments of $25.46 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GLEN BLOMSTROM, M.D. filed 188 Medicare Part D claims in 2023 across WATERBURY, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

GLEN BLOMSTROM, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

GLEN BLOMSTROM, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/03/2009

NPI 1336378991

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

188 47% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Connecticut

How Emergency Medicine Physician compares to other specialties among Connecticut providers

Connecticut providers

Emergency Medicine Physician share within Connecticut

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Emergency Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Emergency Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Emergency 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).

GLEN BLOMSTROM, M.D. is a Emergency Medicine Physician provider practicing in WATERBURY, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1336378991. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

GLEN BLOMSTROM, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 56 FRANKLIN ST, WATERBURY, CT, 06706, with a listed phone of (203) 709-6004. NPI 1336378991 was issued on 07/03/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BLOMSTROM 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 records for calendar year 2023 show 188 prescription claims written by this provider, covering 89 Medicare beneficiaries and totaling roughly $4K in drug spend, split 13% brand-name and 87% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

56 FRANKLIN ST
WATERBURY, CT 06706

Provider Details

NPI 1336378991
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 07/03/2009

Hospital and facility affiliations

Facilities where GLEN BLOMSTROM, 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.

BRIDGEPORT HOSPITAL
★★★★☆ 4/5
BRIDGEPORT, CT
Acute Care Hospitals
CMS CCN: 070010
DANBURY HOSPITAL
★★★★☆ 4/5
DANBURY, CT
Acute Care Hospitals
CMS CCN: 070033

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

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for GLEN BLOMSTROM, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$25

Largest payer

ABBVIE INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

GLEN BLOMSTROM, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 188 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

188
Total Claims
$4K
Total Drug Cost
89
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
189
Total Day Supply
2,931
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$1K
Generic Drug Cost
$3K
Antibiotic Claims
27

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
1.88
Gender Split
65% female / 35% male
Age Distribution
<65: 12, 65-74: 31, 75-84: 25, 85+: 21

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Ondansetron Odt
Ondansetron
18
Levothyroxine Sodium
15
Metoclopramide Hcl
14
Mupirocin
13
Dicyclomine Hcl
11
Gabapentin
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Emergency Medicine Physician Overview

How GLEN BLOMSTROM, M.D. fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

GLEN BLOMSTROM, M.D.'s 188 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Connecticut

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

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GLEN BLOMSTROM, M.D.'s specialty?
GLEN BLOMSTROM, M.D. specializes in Emergency Medicine Physician and practices in WATERBURY, Connecticut. Credentials: M.D..
How much does GLEN BLOMSTROM, M.D. prescribe under Medicare Part D?
In 2023, GLEN BLOMSTROM, M.D. wrote 188 Medicare Part D claims totaling $4K in drug costs for 89 beneficiaries.
Where is GLEN BLOMSTROM, M.D. located?
GLEN BLOMSTROM, M.D. is located at 56 FRANKLIN ST, WATERBURY, CT, 06706. Phone: (203) 709-6004.
What is GLEN BLOMSTROM, M.D.'s NPI number?
GLEN BLOMSTROM, M.D.'s National Provider Identifier (NPI) is 1336378991, issued on 07/03/2009.
Does GLEN BLOMSTROM, M.D. prescribe more brand-name or generic drugs?
GLEN BLOMSTROM, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $1K in brand drug costs.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does GLEN BLOMSTROM, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GLEN BLOMSTROM, M.D.'s most frequently prescribed drugs include Ondansetron Odt, Levothyroxine Sodium, Metoclopramide Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GLEN BLOMSTROM, M.D. accept Medicare?
GLEN BLOMSTROM, M.D. appears in CMS Medicare data with 188 Part D claims and 89 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GLEN BLOMSTROM, M.D.'s credentials?
GLEN BLOMSTROM, M.D.'s NPI is 1336378991 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

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.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
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