NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1952322588 MD
Verify on CMS → Thomas Obrien, MD
Internal Medicine Physician in Toms River, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 174,792 in Internal 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
5K
Medicare Part D claims · 612 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
81%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Industry payments
$1.3K
36 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Thomas Obrien, MD carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 5,089 Medicare Part D claims in 2024.
- 75/100
- CMS neutral score · not measured
- 5K
- Part D claims, 2024
- 81%
- 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.
Federal trust snapshot
What official records show about Thomas Obrien, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1952322588), first enumerated 07/21/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 5,089 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
CMS assigned a neutral MIPS final score of 75/100 where no performance category was scored — not a measured quality rank.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.3K in reported industry payments (36 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Obrien with other Internal Medicine Physician providers
Same primary specialty, same federal CMS NPPES roster.
All 108 Internal Medicine Physician providers in Toms River, NJ →
Also enrolled in New Jersey
- Dr. Joseph Aaron, MD, FACP Short Hills, NJ
- Dr. Sirike Aasmaa, DO Montville, NJ
- Dr. Holly Abate Bersalona, M.D. Sea Girt, NJ
- Dr. Kaniz Zehra Abbas, MD Trenton, NJ
- Dr. Shahida Abbas, MD Old Bridge, NJ
- Shahed Abbasi Newark, NJ
Other specialties in Toms River: Student in an Organized Health Care Education/Training Program (186) · Physical Therapist (158) · Clinical Social Worker (144) · Pharmacist (121)
CMS NPPES provider registry desk
NPI 1952322588 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-NEUTRAL · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1952322588
- ENUM-LEGACY 2006
- TAX-MEGA 175K Internal Medicine
- MIPS-NEUTRAL 75/100
- RX-MID 5,089
- BOOK-MID 5,156 in New Jersey
- PHOTO-ENUM Gregory Smith, M.D. · 2006
Thomas Obrien, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
5,089 ≥ 94th percentile 94% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Thomas Obrien, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 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 Thomas Obrien, MD?
CMS neutral score, not measuredPrimary specialty
Internal Medicine Physician
Medicare Part D claims
5,089 83% vs specialty avg
MIPS final score
75/100
Specialty distribution in New Jersey
How Internal Medicine Physician compares to other specialties among New Jersey providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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).
Practice Address
Provider Details
| NPI | 1952322588 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/21/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Individual
Hospital and facility affiliations
Facilities where Thomas Obrien, 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.
Deer Chase Medical Associates PA
Toms River, NJ
Ocean Family And Geriatric Associates LLC
Toms River, NJ
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 Thomas Obrien, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.3K
Largest payer
AstraZeneca Pharmaceuticals LP
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
Thomas Obrien, MD - brand share 18.0%
Internal Medicine Physician average
18% brand-name claims vs 81% generic, on 5,089 2024 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 2024.
5,089
Total Claims
$819K
Total Drug Cost
612
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 12,714.733
- Total Day Supply
- 375,997
- Brand vs Generic
- 18% brand / 81% generic
- Brand Drug Cost
- $690K
- Generic Drug Cost
- $127K
- Antibiotic Claims
- 92
Patient Demographics
- Average Patient Age
- 80.5 years
- Avg HCC Risk Score
- 1.22
- Gender Split
- 60% female / 40% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Thomas Obrien, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
334 claims
- Levothyroxine Sodium
Levothyroxine Sodium
247 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
247 claims
- Metoprolol Succinate
Metoprolol Succinate
202 claims
- Escitalopram Oxalate
Escitalopram Oxalate
198 claims
- Amlodipine Besylate
Amlodipine Besylate
169 claims
- Farxiga
Farxiga
149 claims
- Hydrochlorothiazide 128
Hydrochlorothiazide
128 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 334 |
| Levothyroxine Sodium | 247 |
| Rosuvastatin Calcium | 247 |
| Metoprolol Succinate | 202 |
| Escitalopram Oxalate | 198 |
| Amlodipine Besylate | 169 |
| Farxiga Dapagliflozin Propanediol | 149 |
| Hydrochlorothiazide | 128 |
| Lisinopril | 110 |
| Losartan Potassium | 106 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Thomas Obrien, MD fits within the Internal Medicine Physician landscape nationally.
174,792
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,785
Avg Claims per Provider
Thomas Obrien, MD's 5,089 claims are above the specialty average of 2,785.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Obrien, both outside New Jersey so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Obrien.
One of 5,156 Internal Medicine Physician providers enrolled in New Jersey, 11 are shown on this page.
Dr. Samih Abbassi
MD
West Orange, NJ
Dr. Somaya Abboud
MD
West Orange, NJ
Dr. Hilal Abboushi
MD
Bloomfield, NJ
Dr. Majdi Abdalla
M.D.
Atlantic City, NJ
Malaz Abdalla
MBBS
Newark, NJ
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Thomas Obrien, MD's specialty? ▼
Thomas Obrien, MD specializes in Internal Medicine Physician and practices in Toms River, New Jersey. Credentials: MD.
How much does Thomas Obrien, MD prescribe under Medicare Part D? ▼
In 2024, Thomas Obrien, MD wrote 5,089 Medicare Part D claims totaling $819K in drug costs for 612 beneficiaries.
What is Thomas Obrien, MD's Medicare quality score? ▼
Thomas Obrien, MD has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Thomas Obrien, MD located? ▼
Thomas Obrien, MD is located at 160 STATE HIGHWAY 37 WEST, Toms River, NJ, 08755. Phone: (732) 286-0440.
What is Thomas Obrien, MD's NPI number? ▼
Thomas Obrien, MD's National Provider Identifier (NPI) is 1952322588, issued on 07/21/2006.
Does Thomas Obrien, MD prescribe more brand-name or generic drugs? ▼
Thomas Obrien, MD's prescribing is 18% brand-name and 81% generic drugs by claim count, with $690K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 174,792 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,785 Medicare Part D claims per year.
What drugs does Thomas Obrien, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Thomas Obrien, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Rosuvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Obrien, MD accept Medicare? ▼
Thomas Obrien, MD appears in CMS Medicare data with 5,089 Part D claims and 612 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Obrien, MD's credentials? ▼
Thomas Obrien, MD's NPI is 1952322588 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
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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 August 2026 (NPPES) / 2024 (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 August 2026.