2026 NPPES data Otolaryngology/Facial Plastic Surgery Physician NPI 1588823421 MD
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CORMAC DEPAN, MD

Otolaryngology/Facial Plastic Surgery Physician in WORCESTER, Massachusetts. 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
526
Medicare Part D claims · 218 beneficiaries · Otolaryngology/Facial Plastic Surgery Physician avg: 561
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$30.71
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CORMAC DEPAN, MD filed 526 Medicare Part D claims in 2023 as a Otolaryngology/Facial Plastic Surgery Physician in WORCESTER, Massachusetts, prescribing 86% generic.

526
Part D claims, 2023
86%
generic prescribing
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.

CORMAC DEPAN, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

526 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

CORMAC DEPAN, MD 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 CORMAC DEPAN, MD?

Quality data not reported

NPI registry status

Active

Issued 06/05/2008

NPI 1588823421

Primary specialty

Otolaryngology/Facial Plastic Surgery Physician

Niche

744 US NPIs in this specialty

Medicare Part D claims

526 6% vs specialty avg

2023 prescription claims

Specialty avg: 561

Specialty distribution in Massachusetts

How Otolaryngology/Facial Plastic Surgery Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Otolaryngology/Facial Plastic Surgery Physician share within Massachusetts

1. Otolaryngology/Facial Plastic Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Otolaryngology/Facial Plastic Surgery Physician share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Otolaryngology/Facial Plastic Surgery Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Otolaryngology/Facial Plastic Surgery Physician ABMS/AOA estimate

Est. board-certified rate (Otolaryngology/Facial Plastic Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Otolaryngology/Facial Plastic Surgery 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).

CORMAC DEPAN, MD appears in the CMS NPPES registry as a Otolaryngology/Facial Plastic Surgery Physician provider holding MD credentials at 123 SUMMER ST, WORCESTER, MA, 01608, with a listed phone of (508) 368-3103. NPI 1588823421 was issued on 06/05/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DEPAN 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 526 prescription claims written by this provider, covering 218 Medicare beneficiaries and totaling roughly $81K in drug spend, split 14% brand-name and 86% 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.

Otolaryngology/Facial Plastic Surgery Physician is a narrow specialty nationwide, with 744 enrolled providers across 53 states and an average of 561 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

123 SUMMER ST
WORCESTER, MA 01608

Provider Details

NPI 1588823421
Specialty Otolaryngology/Facial Plastic Surgery Physician
Credentials MD
Gender Male
NPI Issued 06/05/2008

Hospital and facility affiliations

Facilities where CORMAC DEPAN, MD 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.

RELIANT MEDICAL GROUP INC
WORCESTER, MA

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 CORMAC DEPAN, MD. Source: openpaymentsdata.cms.gov.

Total received

$31

Largest payer

GENZYME CORPORATION

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.

License & disciplinary context — Massachusetts BORIM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 — they are NOT specific to CORMAC DEPAN, MD. To verify CORMAC DEPAN, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

CORMAC DEPAN, MD — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 526 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.

526
Total Claims
$81K
Total Drug Cost
218
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
786
Total Day Supply
19,739
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$69K
Generic Drug Cost
$13K
Antibiotic Claims
49

Patient Demographics

Average Patient Age
70.6 years
Avg HCC Risk Score
1.35
Gender Split
57% female / 43% male
Age Distribution
<65: 40, 65-74: 93, 75-84: 61, 85+: 24

Top Prescribed Drugs (Medicare Part D)

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

What CORMAC DEPAN, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Fluticasone Propionate
126
Azelastine Hcl
51
Ipratropium Bromide
51
Omeprazole
33
Epinephrine
31
Levocetirizine Dihydrochloride
30
Xolair
Omalizumab
20
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
19
Cefuroxime
Cefuroxime Axetil
14
Ofloxacin
13

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

Otolaryngology/Facial Plastic Surgery Physician Overview

How CORMAC DEPAN, MD fits within the Otolaryngology/Facial Plastic Surgery Physician landscape nationally.

744
Otolaryngology/Facial Plastic Surgery Physician Providers in US
53
States with Otolaryngology/Facial Plastic Surgery Physician
561
Avg Claims per Provider

CORMAC DEPAN, MD's 526 claims are below the specialty average of 561.

Nearby Otolaryngology/Facial Plastic Surgery Physician Providers in Massachusetts

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

Compare Otolaryngology/Facial Plastic Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CORMAC DEPAN, MD's specialty?
CORMAC DEPAN, MD specializes in Otolaryngology/Facial Plastic Surgery Physician and practices in WORCESTER, Massachusetts. Credentials: MD.
How much does CORMAC DEPAN, MD prescribe under Medicare Part D?
In 2023, CORMAC DEPAN, MD wrote 526 Medicare Part D claims totaling $81K in drug costs for 218 beneficiaries.
Where is CORMAC DEPAN, MD located?
CORMAC DEPAN, MD is located at 123 SUMMER ST, WORCESTER, MA, 01608. Phone: (508) 368-3103.
What is CORMAC DEPAN, MD's NPI number?
CORMAC DEPAN, MD's National Provider Identifier (NPI) is 1588823421, issued on 06/05/2008.
Does CORMAC DEPAN, MD prescribe more brand-name or generic drugs?
CORMAC DEPAN, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $69K in brand drug costs.
How many Otolaryngology/Facial Plastic Surgery Physician providers are there in the US?
There are 744 Otolaryngology/Facial Plastic Surgery Physician providers across 53 states in the US. The average Otolaryngology/Facial Plastic Surgery Physician provider writes 561 Medicare Part D claims per year.
What drugs does CORMAC DEPAN, MD prescribe most often?
Based on 2023 Medicare Part D data, CORMAC DEPAN, MD's most frequently prescribed drugs include Fluticasone Propionate, Azelastine Hcl, Ipratropium Bromide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CORMAC DEPAN, MD accept Medicare?
CORMAC DEPAN, MD appears in CMS Medicare data with 526 Part D claims and 218 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CORMAC DEPAN, MD's credentials?
CORMAC DEPAN, MD's NPI is 1588823421 with credentials MD. 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