NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1235576836 MBCHB
Verify on CMS → Shimontini Mitra, MBCHB
Nephrology 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 10,569 in Nephrology 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
422
Medicare Part D claims · 98 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
82%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Shimontini Mitra, MBCHB filed 422 Medicare Part D claims in 2023 as a Nephrology Physician in Boston, Massachusetts, prescribing 82% generic.
- 422
- Part D claims, 2023
- 82%
- 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.
Shimontini Mitra, MBCHB's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
422 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)
Shimontini Mitra, MBCHB practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Shimontini Mitra, MBCHB?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
422 71% vs specialty avg
Specialty distribution in Massachusetts
How Nephrology 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 Nephrology 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).
Shimontini Mitra, MBCHB appears in the CMS NPPES registry as a Nephrology Physician provider holding MBCHB credentials at 330 BROOKLINE AVE, Boston, MA, 02215, with a listed phone of (617) 667-7000. NPI 1235576836 was issued on 05/23/2013.
Medicare Part D records for calendar year 2023 show 422 prescription claims written by this provider, covering 98 Medicare beneficiaries and totaling roughly $65K in drug spend, split 15% brand-name and 82% generic by claim count.
Nephrology Physician is a mid-sized specialty nationwide, with 10,569 enrolled providers across 55 states and an average of 1,454 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 | 1235576836 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MBCHB |
| Gender | Female |
| NPI Issued | 05/23/2013 |
Hospital and facility affiliations
Facilities where Shimontini Mitra, MBCHB 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.
Atrius Health Inc
Dedham, MA
Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr Inc
Boston, 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).
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 Shimontini Mitra, MBCHB. To verify Shimontini Mitra, MBCHB'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
Shimontini Mitra, MBCHB - brand share 15.0%
Nephrology Physician average
15% brand-name claims vs 82% generic, on 422 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.
422
Total Claims
$65K
Total Drug Cost
98
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 748
- Total Day Supply
- 22,085
- Brand vs Generic
- 15% brand / 82% generic
- Brand Drug Cost
- $51K
- Generic Drug Cost
- $14K
Patient Demographics
- Average Patient Age
- 63.3 years
- Avg HCC Risk Score
- 1.23
- Gender Split
- 37% female / 63% male
- Age Distribution
- <65: 40, 65-74: 38, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Shimontini Mitra, MBCHB prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
54 claims
- Lisinopril
Lisinopril
33 claims
- Losartan Potassium
Losartan Potassium
33 claims
- Hydrochlorothiazide
Hydrochlorothiazide
29 claims
- Farxiga 19
Farxiga
19 claims
- Estradiol 18
Estradiol
18 claims
- Carvedilol 15
Carvedilol
15 claims
- Furosemide 14
Furosemide
14 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 54 |
| Lisinopril | 33 |
| Losartan Potassium | 33 |
| Hydrochlorothiazide | 29 |
| Farxiga Dapagliflozin Propanediol | 19 |
| Estradiol | 18 |
| Carvedilol | 15 |
| Furosemide | 14 |
| Atorvastatin Calcium | 13 |
| Omeprazole | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Shimontini Mitra, MBCHB fits within the Nephrology Physician landscape nationally.
10,569
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Shimontini Mitra, MBCHB's 422 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Mitra.
Dr. Amtul Aala
MD
Boston, MA
Dr. Reza Abdi
MD
Boston, MA
Vivian Abernethy
Boston, MA
Dr. Rekha Abichandani
M.D.
Cambridge, MA
Dr. Konstantin Abramov
M.D.
Worcester, MA
Compare Nephrology 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 Nephrology 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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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Shimontini Mitra, MBCHB's specialty? ▼
Shimontini Mitra, MBCHB specializes in Nephrology Physician and practices in Boston, Massachusetts. Credentials: MBCHB.
How much does Shimontini Mitra, MBCHB prescribe under Medicare Part D? ▼
In 2023, Shimontini Mitra, MBCHB wrote 422 Medicare Part D claims totaling $65K in drug costs for 98 beneficiaries.
Where is Shimontini Mitra, MBCHB located? ▼
Shimontini Mitra, MBCHB is located at 330 BROOKLINE AVE, Boston, MA, 02215. Phone: (617) 667-7000.
What is Shimontini Mitra, MBCHB's NPI number? ▼
Shimontini Mitra, MBCHB's National Provider Identifier (NPI) is 1235576836, issued on 05/23/2013.
Does Shimontini Mitra, MBCHB prescribe more brand-name or generic drugs? ▼
Shimontini Mitra, MBCHB's prescribing is 15% brand-name and 82% generic drugs by claim count, with $51K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,569 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Shimontini Mitra, MBCHB prescribe most often? ▼
Based on 2023 Medicare Part D data, Shimontini Mitra, MBCHB's most frequently prescribed drugs include Amlodipine Besylate, Lisinopril, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Shimontini Mitra, MBCHB accept Medicare? ▼
Shimontini Mitra, MBCHB appears in CMS Medicare data with 422 Part D claims and 98 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Shimontini Mitra, MBCHB's credentials? ▼
Shimontini Mitra, MBCHB's NPI is 1235576836 with credentials MBCHB. 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.