2026 NPPES data Obstetrics Physician NPI 1891939567 MD
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SHARON ROBERTSON, MD

Obstetrics Physician in INDIANAPOLIS, Indiana. 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
143
Medicare Part D claims · 44 beneficiaries · Obstetrics Physician avg: 319
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$46.89
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: SHARON ROBERTSON, MD is a Obstetrics Physician ([object Object]) practicing in INDIANAPOLIS, Indiana with a Medicare Part D prescribing footprint of 143 claims across 44 beneficiaries — 11% brand-name prescribing . Industry payments of $46.89 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: SHARON ROBERTSON, MD filed 143 Medicare Part D claims in 2023 across INDIANAPOLIS, Indiana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

SHARON ROBERTSON, MD 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).

SHARON ROBERTSON, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/26/2009

NPI 1891939567

Primary specialty

Obstetrics Physician

Niche

1,402 US NPIs in this specialty

Medicare Part D claims

143 55% vs specialty avg

2023 prescription claims

Specialty avg: 319

Specialty distribution in Indiana

How Obstetrics Physician compares to other specialties among Indiana providers

Indiana providers

Obstetrics Physician share within Indiana

1. Obstetrics Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obstetrics Physician share within Indiana

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Obstetrics 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).

SHARON ROBERTSON, MD is a Obstetrics Physician provider practicing in INDIANAPOLIS, Indiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1891939567. 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.

SHARON ROBERTSON, MD appears in the CMS NPPES registry as a Obstetrics Physician provider holding MD credentials at 1701 N SENATE BLVD, INDIANAPOLIS, IN, 46202, with a listed phone of (888) 484-3258. NPI 1891939567 was issued on 04/26/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ROBERTSON 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 143 prescription claims written by this provider, covering 44 Medicare beneficiaries and totaling roughly $85K in drug spend, split 11% brand-name and 89% generic by claim count. 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.

Obstetrics Physician is a narrow specialty nationwide, with 1,402 enrolled providers across 54 states and an average of 319 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

1701 N SENATE BLVD
INDIANAPOLIS, IN 46202

Provider Details

NPI 1891939567
Specialty Obstetrics Physician
Credentials MD
Gender Female
NPI Issued 04/26/2009

Hospital and facility affiliations

Facilities where SHARON ROBERTSON, 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.

IU HEALTH MEDICAL GROUP LLC
INDIANAPOLIS, IN

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 SHARON ROBERTSON, MD. Source: openpaymentsdata.cms.gov.

Total received

$47

Largest payer

ABBVIE 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.

Brand vs generic prescribing mix · Typical

SHARON ROBERTSON, MD — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 143 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.

143
Total Claims
$85K
Total Drug Cost
44
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
190
Total Day Supply
4,142
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$83K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
68.5 years
Avg HCC Risk Score
3.14
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Letrozole
17
Tamoxifen Citrate
13
Dexamethasone
12

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

Obstetrics Physician Overview

How SHARON ROBERTSON, MD fits within the Obstetrics Physician landscape nationally.

1,402
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider

SHARON ROBERTSON, MD's 143 claims are below the specialty average of 319.

Nearby Obstetrics Physician Providers in Indiana

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

Compare Obstetrics Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SHARON ROBERTSON, MD's specialty?
SHARON ROBERTSON, MD specializes in Obstetrics Physician and practices in INDIANAPOLIS, Indiana. Credentials: MD.
How much does SHARON ROBERTSON, MD prescribe under Medicare Part D?
In 2023, SHARON ROBERTSON, MD wrote 143 Medicare Part D claims totaling $85K in drug costs for 44 beneficiaries.
Where is SHARON ROBERTSON, MD located?
SHARON ROBERTSON, MD is located at 1701 N SENATE BLVD, INDIANAPOLIS, IN, 46202. Phone: (888) 484-3258.
What is SHARON ROBERTSON, MD's NPI number?
SHARON ROBERTSON, MD's National Provider Identifier (NPI) is 1891939567, issued on 04/26/2009.
Does SHARON ROBERTSON, MD prescribe more brand-name or generic drugs?
SHARON ROBERTSON, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $83K in brand drug costs.
How many Obstetrics Physician providers are there in the US?
There are 1,402 Obstetrics Physician providers across 54 states in the US. The average Obstetrics Physician provider writes 319 Medicare Part D claims per year.
What drugs does SHARON ROBERTSON, MD prescribe most often?
Based on 2023 Medicare Part D data, SHARON ROBERTSON, MD's most frequently prescribed drugs include Letrozole, Tamoxifen Citrate, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SHARON ROBERTSON, MD accept Medicare?
SHARON ROBERTSON, MD appears in CMS Medicare data with 143 Part D claims and 44 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHARON ROBERTSON, MD's credentials?
SHARON ROBERTSON, MD's NPI is 1891939567 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

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