NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1548203920 DO,MPH
Verify on CMS → Terrence Mulligan, DO,MPH
Emergency Medicine Physician in Rockville, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 64,463 in Emergency Medicine 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.
Prescribing volume
955
Medicare Part D claims · 455 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
87%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Terrence Mulligan, DO,MPH filed 955 Medicare Part D claims in 2023 as an Emergency Medicine Physician in Rockville, Maryland, prescribing 87% generic.
- 955
- Part D claims, 2023
- 87%
- 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.
Terrence Mulligan, DO,MPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
955 Top 25% higher than 75% of 1,370,886 prescribers
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)
Terrence Mulligan, DO,MPH practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - 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 Terrence Mulligan, DO,MPH?
Quality data not reportedPrimary specialty
Emergency Medicine Physician
Medicare Part D claims
955 171% vs specialty avg
Specialty distribution in Maryland
How Emergency Medicine Physician compares to other specialties among Maryland 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 Emergency Medicine 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).
Terrence Mulligan, DO,MPH appears in the CMS NPPES registry as an Emergency Medicine Physician provider holding DO,MPH credentials at 2101 E JEFFERSON ST, Rockville, MD, 20852, with a listed phone of (800) 227-6472. NPI 1548203920 was issued on 06/14/2006.
Medicare Part D records for calendar year 2023 show 955 prescription claims written by this provider, covering 455 Medicare beneficiaries and totaling roughly $16K in drug spend, split 11% brand-name and 87% generic by claim count, with an opioid prescribing rate of 2.4%.
Emergency Medicine Physician is a high-volume specialty nationwide, with 64,463 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
Provider Details
| NPI | 1548203920 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | DO,MPH |
| Gender | Male |
| NPI Issued | 06/14/2006 |
Hospital and facility affiliations
Facilities where Terrence Mulligan, DO,MPH 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.
According to CMS billing records, Terrence Mulligan, DO,MPH is affiliated with 3 Medicare-billing facilities across 2 states.
Ohio Valley Physicians Inc
Grundy, VA
RH Emergency Medicine OF Och Regional LLC
Starkville, MS
Warren Memorial Hospital, Inc.
Front Royal, VA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Terrence Mulligan, DO,MPH - brand share 11.0%
Emergency Medicine Physician average
11% brand-name claims vs 87% generic, on 955 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.
955
Total Claims
$16K
Total Drug Cost
455
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,020
- Total Day Supply
- 11,485
- Brand vs Generic
- 11% brand / 87% generic
- Brand Drug Cost
- $8K
- Generic Drug Cost
- $8K
- Opioid Claims
- 23 (2.4% rate)
- Antibiotic Claims
- 243
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 1.44
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 70, 65-74: 221, 75-84: 128, 85+: 36
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Terrence Mulligan, DO,MPH prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ibuprofen
Ibuprofen
195 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
100 claims
- Azithromycin 65
Azithromycin
65 claims
- Prednisone 59
Prednisone
59 claims
- Dicyclomine Hcl 46
Dicyclomine Hcl
46 claims
- Clindamycin Hcl 44
Clindamycin Hcl
44 claims
- Ondansetron Odt 43
Ondansetron Odt
43 claims
- Sulfamethoxazole-T… 40
Sulfamethoxazole-Trimethoprim
40 claims
| Drug | Claims |
|---|---|
| Ibuprofen | 195 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 100 |
| Azithromycin | 65 |
| Prednisone | 59 |
| Dicyclomine Hcl | 46 |
| Clindamycin Hcl | 44 |
| Ondansetron Odt Ondansetron | 43 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 40 |
| Cyclobenzaprine Hcl | 29 |
| Famotidine | 29 |
* 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 Terrence Mulligan, DO,MPH fits within the Emergency Medicine Physician landscape nationally.
64,463
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider
Terrence Mulligan, DO,MPH's 955 claims are above the specialty average of 352.
Nearby Emergency Medicine Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Mulligan.
Kara Abarcar
Baltimore, MD
Dr. Steven Abert
MD
Glen Burnie, MD
Dr. John Abraham
M.D.
Germantown, MD
Dr. Michael Abraham
MD
Baltimore, MD
Dr. Elias Abras
MD
Baltimore, MD
Compare Emergency Medicine 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 Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Emergency Medicine 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.
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Frequently Asked Questions
What is Terrence Mulligan, DO,MPH's specialty? ▼
Terrence Mulligan, DO,MPH specializes in Emergency Medicine Physician and practices in Rockville, Maryland. Credentials: DO,MPH.
How much does Terrence Mulligan, DO,MPH prescribe under Medicare Part D? ▼
In 2023, Terrence Mulligan, DO,MPH wrote 955 Medicare Part D claims totaling $16K in drug costs for 455 beneficiaries.
Where is Terrence Mulligan, DO,MPH located? ▼
Terrence Mulligan, DO,MPH is located at 2101 E JEFFERSON ST, Rockville, MD, 20852. Phone: (800) 227-6472.
What is Terrence Mulligan, DO,MPH's NPI number? ▼
Terrence Mulligan, DO,MPH's National Provider Identifier (NPI) is 1548203920, issued on 06/14/2006.
Does Terrence Mulligan, DO,MPH prescribe more brand-name or generic drugs? ▼
Terrence Mulligan, DO,MPH's prescribing is 11% brand-name and 87% generic drugs by claim count, with $8K in brand drug costs.
Does Terrence Mulligan, DO,MPH prescribe opioids? ▼
Yes, Terrence Mulligan, DO,MPH had 23 opioid claims in 2023 with an opioid prescribing rate of 2.4%.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 64,463 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 Terrence Mulligan, DO,MPH prescribe most often? ▼
Based on 2023 Medicare Part D data, Terrence Mulligan, DO,MPH's most frequently prescribed drugs include Ibuprofen, Albuterol Sulfate Hfa, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Terrence Mulligan, DO,MPH accept Medicare? ▼
Terrence Mulligan, DO,MPH appears in CMS Medicare data with 955 Part D claims and 455 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Terrence Mulligan, DO,MPH's credentials? ▼
Terrence Mulligan, DO,MPH's NPI is 1548203920 with credentials DO,MPH. 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.
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.