NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1336608124
Verify on CMS → Tomas Andersen
Ophthalmology Physician in Boston, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 22,082 in Ophthalmology 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
489
Medicare Part D claims · 243 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
59%
generic claims · 41% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$170.22
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Tomas Andersen filed 489 Medicare Part D claims in 2023 as a Ophthalmology Physician in Boston, Massachusetts, prescribing 59% generic.
- 489
- Part D claims, 2023
- 59%
- 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.
Tomas Andersen's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
489 Top 38% higher than 62% 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)
Tomas Andersen 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 Tomas Andersen?
Quality data not reportedPrimary specialty
Ophthalmology Physician
Medicare Part D claims
489 66% vs specialty avg
Specialty distribution in Massachusetts
How Ophthalmology Physician compares to other specialties among Massachusetts 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 Ophthalmology 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).
Tomas Andersen appears in the CMS NPPES registry as an Ophthalmology Physician provider at 243 CHARLES ST, Boston, MA, 02114, with a listed phone of (617) 573-4443. NPI 1336608124 was issued on 03/19/2019.
Medicare Part D records for calendar year 2023 show 489 prescription claims written by this provider, covering 243 Medicare beneficiaries and totaling roughly $44K in drug spend, split 41% brand-name and 59% generic by claim count.
Ophthalmology Physician is a mid-sized specialty nationwide, with 22,082 enrolled providers across 56 states and an average of 1,420 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 | 1336608124 |
|---|---|
| Specialty | Ophthalmology Physician |
| Gender | Male |
| NPI Issued | 03/19/2019 |
Hospital and facility affiliations
Facilities where Tomas Andersen 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.
Boston University Eye Associates, Inc.
Taunton, 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 Tomas Andersen. Source: openpaymentsdata.cms.gov.
Total received
$170
Largest payer
Glaukos 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 Tomas Andersen. To verify Tomas Andersen'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 · Above average
Tomas Andersen - brand share 41.0%
Ophthalmology Physician average
41% brand-name claims vs 59% generic, on 489 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.
489
Total Claims
$44K
Total Drug Cost
243
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 720
- Total Day Supply
- 17,971
- Brand vs Generic
- 41% brand / 59% generic
- Brand Drug Cost
- $34K
- Generic Drug Cost
- $10K
- Antibiotic Claims
- 21
Patient Demographics
- Average Patient Age
- 71.7 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 37, 65-74: 107, 75-84: 77, 85+: 22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Tomas Andersen prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisolone Acetate
Prednisolone Acetate
111 claims
- Moxifloxacin
Moxifloxacin
99 claims
- Erythromycin 29
Erythromycin
29 claims
- Fluorometholone 27
Fluorometholone
27 claims
- Valacyclovir 27
Valacyclovir
27 claims
- Doxycycline Monohy… 20
Doxycycline Monohydrate
20 claims
- Brimonidine Tartrate 16
Brimonidine Tartrate
16 claims
- Loteprednol Etabon… 13
Loteprednol Etabonate
13 claims
| Drug | Claims |
|---|---|
| Prednisolone Acetate | 111 |
| Moxifloxacin Moxifloxacin Hcl | 99 |
| Erythromycin Erythromycin Base | 29 |
| Fluorometholone | 27 |
| Valacyclovir Valacyclovir Hcl | 27 |
| Doxycycline Monohydrate | 20 |
| Brimonidine Tartrate | 16 |
| Loteprednol Etabonate | 13 |
| Timolol Maleate | 13 |
| Ketorolac Tromethamine | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Tomas Andersen fits within the Ophthalmology Physician landscape nationally.
22,082
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider
Tomas Andersen's 489 claims are below the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Andersen.
Dr. Mark Abelson
M.D.
Andover, MA
Dr. Inas Aboobakar
M.D.
Boston, MA
Dr. Alessandro Adad Jammal
MD, PHD
Boston, MA
Dr. David Agahigian
M.D.
Springfield, MA
Dr. Kanika Agarwal
MD
Boston, MA
Compare Ophthalmology 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 Massachusetts medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Ophthalmology 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 Tomas Andersen's specialty? ▼
Tomas Andersen specializes in Ophthalmology Physician and practices in Boston, Massachusetts.
How much does Tomas Andersen prescribe under Medicare Part D? ▼
In 2023, Tomas Andersen wrote 489 Medicare Part D claims totaling $44K in drug costs for 243 beneficiaries.
Where is Tomas Andersen located? ▼
Tomas Andersen is located at 243 CHARLES ST, Boston, MA, 02114. Phone: (617) 573-4443.
What is Tomas Andersen's NPI number? ▼
Tomas Andersen's National Provider Identifier (NPI) is 1336608124, issued on 03/19/2019.
Does Tomas Andersen prescribe more brand-name or generic drugs? ▼
Tomas Andersen's prescribing is 41% brand-name and 59% generic drugs by claim count, with $34K in brand drug costs.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,082 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does Tomas Andersen prescribe most often? ▼
Based on 2023 Medicare Part D data, Tomas Andersen's most frequently prescribed drugs include Prednisolone Acetate, Moxifloxacin, Erythromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tomas Andersen accept Medicare? ▼
Tomas Andersen appears in CMS Medicare data with 489 Part D claims and 243 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tomas Andersen's credentials? ▼
Tomas Andersen's NPI is 1336608124. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.