NPI registry status
Active
2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1144216821 MD
Verify on CMS → Manju Subramanian, MD
Retina Specialist (Ophthalmology) Physician in Taunton, 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 913 in Retina Specialist (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
184
Medicare Part D claims · 51 beneficiaries · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$10.2K
15 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
Manju Subramanian, MD filed 184 Medicare Part D claims in 2023 as a Retina Specialist (Ophthalmology) Physician in Taunton, Massachusetts, prescribing 83% generic.
- 184
- Part D claims, 2023
- 83%
- 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.
Manju Subramanian, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
184 35th percentile higher than 35% 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)
Manju Subramanian, MD 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 Manju Subramanian, MD?
Quality data not reportedPrimary specialty
Retina Specialist (Ophthalmology) Physician
Medicare Part D claims
184 67% vs specialty avg
Specialty distribution in Massachusetts
How Retina Specialist (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 Retina Specialist (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).
Manju Subramanian, MD appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding MD credentials at 2005 BAY ST STE 206, Taunton, MA, 02780, with a listed phone of (508) 823-7473. NPI 1144216821 was issued on 09/27/2005.
Medicare Part D records for calendar year 2023 show 184 prescription claims written by this provider, covering 51 Medicare beneficiaries and totaling roughly $9K in drug spend, split 17% brand-name and 83% generic by claim count.
Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 558 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 | 1144216821 |
|---|---|
| Specialty | Retina Specialist (Ophthalmology) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 09/27/2005 |
Hospital and facility affiliations
Facilities where Manju Subramanian, 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.
According to CMS billing records, Manju Subramanian, MD is affiliated with 3 Medicare-billing facilities.
Boston University Eye Associates, Inc.
Brockton, MA
Lexington Eye Associates - Bid
Lexington, MA
Lexington Eye Associates, Inc
Lexington, 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 Manju Subramanian, MD. Source: openpaymentsdata.cms.gov.
Total received
$10.2K
Largest payer
Regeneron Pharmaceuticals, Inc.
Most common payment type
Travel and Lodging
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 Manju Subramanian, MD. To verify Manju Subramanian, 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
Manju Subramanian, MD - brand share 17.0%
Retina Specialist (Ophthalmology) Physician average
17% brand-name claims vs 83% generic, on 184 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.
184
Total Claims
$9K
Total Drug Cost
51
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 314
- Total Day Supply
- 9,169
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.87
- Gender Split
- 41% female / 59% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Manju Subramanian, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Brimonidine Tartrate
Brimonidine Tartrate
57 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
35 claims
- Latanoprost
Latanoprost
29 claims
- Dorzolamide Hcl 19
Dorzolamide Hcl
19 claims
| Drug | Claims |
|---|---|
| Brimonidine Tartrate | 57 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 35 |
| Latanoprost | 29 |
| Dorzolamide Hcl | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Retina Specialist (Ophthalmology) Physician in MA →
All providers in Massachusetts →
Compare specialties →
Retina Specialist (Ophthalmology) Physician Overview
How Manju Subramanian, MD fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.
913
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider
Manju Subramanian, MD's 184 claims are below the specialty average of 558.
Nearby Retina Specialist (Ophthalmology) Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Subramanian.
Dr. Omar Abdelal
MD
Boston, MA
Dr. Brian Ballios
MD, PHD
Boston, MA
Dr. Fina Barouch
MD
Peabody, MA
Dr. Mark Barsamian
DO
Hopedale, MA
Dr. Lauren Bierman
M.D.
Boston, MA
Compare Retina Specialist (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 Retina Specialist (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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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Manju Subramanian, MD's specialty? ▼
Manju Subramanian, MD specializes in Retina Specialist (Ophthalmology) Physician and practices in Taunton, Massachusetts. Credentials: MD.
How much does Manju Subramanian, MD prescribe under Medicare Part D? ▼
In 2023, Manju Subramanian, MD wrote 184 Medicare Part D claims totaling $9K in drug costs for 51 beneficiaries.
Where is Manju Subramanian, MD located? ▼
Manju Subramanian, MD is located at 2005 BAY ST STE 206, Taunton, MA, 02780. Phone: (508) 823-7473.
What is Manju Subramanian, MD's NPI number? ▼
Manju Subramanian, MD's National Provider Identifier (NPI) is 1144216821, issued on 09/27/2005.
Does Manju Subramanian, MD prescribe more brand-name or generic drugs? ▼
Manju Subramanian, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $4K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 913 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
What drugs does Manju Subramanian, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Manju Subramanian, MD's most frequently prescribed drugs include Brimonidine Tartrate, Dorzolamide-Timolol, Latanoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Manju Subramanian, MD accept Medicare? ▼
Manju Subramanian, MD appears in CMS Medicare data with 184 Part D claims and 51 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Manju Subramanian, MD's credentials? ▼
Manju Subramanian, MD's NPI is 1144216821 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 (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.