2026 NPPES data Geriatric Psychiatry Physician NPI 1457302143 M.D.
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INDRANIL CHAKRABARTI, M.D.

Geriatric Psychiatry Physician in CHAMBERSBURG, Pennsylvania. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 192 beneficiaries · Geriatric Psychiatry Physician avg: 2K
Industry payments
$151.9
3 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: INDRANIL CHAKRABARTI, M.D. is a Geriatric Psychiatry Physician ([object Object]) practicing in CHAMBERSBURG, Pennsylvania with a Medicare Part D prescribing footprint of 2K claims across 192 beneficiaries . Industry payments of $151.9 across 3 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: INDRANIL CHAKRABARTI, M.D. filed 2,225 Medicare Part D claims in 2023 across CHAMBERSBURG, Pennsylvania. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

INDRANIL CHAKRABARTI, M.D. 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).

INDRANIL CHAKRABARTI, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/15/2006

NPI 1457302143

Primary specialty

Geriatric Psychiatry Physician

Niche

785 US NPIs in this specialty

Medicare Part D claims

2,225 40% vs specialty avg

2023 prescription claims

Specialty avg: 1,586

Specialty distribution in Pennsylvania

How Geriatric Psychiatry Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Geriatric Psychiatry Physician share within Pennsylvania

1. Geriatric Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Psychiatry Physician share within Pennsylvania

Specialty board-certification context

Estimated specialty board-certified rate — Geriatric Psychiatry Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Geriatric Psychiatry Physician ABMS/AOA estimate

Est. board-certified rate (Geriatric Psychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Geriatric Psychiatry Physician) — ABMS / AOA estimate

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).

INDRANIL CHAKRABARTI, M.D. is a Geriatric Psychiatry Physician provider practicing in CHAMBERSBURG, Pennsylvania, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1457302143. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

INDRANIL CHAKRABARTI, M.D. appears in the CMS NPPES registry as a Geriatric Psychiatry Physician provider holding M.D. credentials at 100 CHAMBERS HILL DR STE 200, CHAMBERSBURG, PA, 17201, with a listed phone of (717) 709-7930. NPI 1457302143 was issued on 05/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAKRABARTI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,225 prescription claims written by this provider, covering 192 Medicare beneficiaries and totaling roughly $91K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Geriatric Psychiatry Physician is a narrow specialty nationwide, with 785 enrolled providers across 46 states and an average of 1,586 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

100 CHAMBERS HILL DR STE 200
CHAMBERSBURG, PA 17201

Provider Details

NPI 1457302143
Specialty Geriatric Psychiatry Physician
Credentials M.D.
Gender Male
NPI Issued 05/15/2006

Hospital and facility affiliations

Facilities where INDRANIL CHAKRABARTI, M.D. 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.

EASTERN PENNSYLVANIA PHYSICIAN ALLIANCE, LLC
SHIPPENSBURG, PA
PINNACLE HEALTH MEDICAL SERVICES
HARRISBURG, PA

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 INDRANIL CHAKRABARTI, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$152

Largest payer

Teva Pharmaceuticals USA, Inc.

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 — Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to INDRANIL CHAKRABARTI, M.D.. To verify INDRANIL CHAKRABARTI, M.D.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

2,225
Total Claims
$91K
Total Drug Cost
192
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,946
Total Day Supply
79,674
Generic Drug Cost
$50K
Antibiotic Claims
13

Patient Demographics

Average Patient Age
66.6 years
Avg HCC Risk Score
1.64
Gender Split
56% female / 44% male
Age Distribution
<65: 72, 65-74: 48, 75-84: 41, 85+: 31

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Venlafaxine Hcl Er
Venlafaxine Hcl
154
Trazodone Hcl
148
Aripiprazole
144
Clonazepam
135
Mirtazapine
133
Quetiapine Fumarate
112
Lorazepam
106
Sertraline Hcl
99
Olanzapine
71
Risperidone
71

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Geriatric Psychiatry Physician Overview

How INDRANIL CHAKRABARTI, M.D. fits within the Geriatric Psychiatry Physician landscape nationally.

785
Geriatric Psychiatry Physician Providers in US
46
States with Geriatric Psychiatry Physician
1,586
Avg Claims per Provider

INDRANIL CHAKRABARTI, M.D.'s 2,225 claims are above the specialty average of 1,586.

Nearby Geriatric Psychiatry Physician Providers in Pennsylvania

Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as CHAKRABARTI.

Compare Geriatric Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is INDRANIL CHAKRABARTI, M.D.'s specialty?
INDRANIL CHAKRABARTI, M.D. specializes in Geriatric Psychiatry Physician and practices in CHAMBERSBURG, Pennsylvania. Credentials: M.D..
How much does INDRANIL CHAKRABARTI, M.D. prescribe under Medicare Part D?
In 2023, INDRANIL CHAKRABARTI, M.D. wrote 2,225 Medicare Part D claims totaling $91K in drug costs for 192 beneficiaries.
Where is INDRANIL CHAKRABARTI, M.D. located?
INDRANIL CHAKRABARTI, M.D. is located at 100 CHAMBERS HILL DR STE 200, CHAMBERSBURG, PA, 17201. Phone: (717) 709-7930.
What is INDRANIL CHAKRABARTI, M.D.'s NPI number?
INDRANIL CHAKRABARTI, M.D.'s National Provider Identifier (NPI) is 1457302143, issued on 05/15/2006.
How many Geriatric Psychiatry Physician providers are there in the US?
There are 785 Geriatric Psychiatry Physician providers across 46 states in the US. The average Geriatric Psychiatry Physician provider writes 1,586 Medicare Part D claims per year.
What drugs does INDRANIL CHAKRABARTI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, INDRANIL CHAKRABARTI, M.D.'s most frequently prescribed drugs include Venlafaxine Hcl Er, Trazodone Hcl, Aripiprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does INDRANIL CHAKRABARTI, M.D. accept Medicare?
INDRANIL CHAKRABARTI, M.D. appears in CMS Medicare data with 2,225 Part D claims and 192 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify INDRANIL CHAKRABARTI, M.D.'s credentials?
INDRANIL CHAKRABARTI, M.D.'s NPI is 1457302143 with credentials M.D.. 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

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