2026 NPPES data Adult Medicine Physician NPI 1295920817 N.P.
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SANDRA SCHARF, N.P.

Adult Medicine Physician in O FALLON, Missouri. 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
137
Medicare Part D claims · 101 beneficiaries · Adult Medicine Physician avg: 3K
What the federal data reveals: SANDRA SCHARF, N.P. is a Adult Medicine Physician ([object Object]) practicing in O FALLON, Missouri with a Medicare Part D prescribing footprint of 137 claims across 101 beneficiaries .

What stands out: SANDRA SCHARF, N.P. filed 137 Medicare Part D claims in 2023 across O FALLON, Missouri. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

SANDRA SCHARF, N.P. 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).

SANDRA SCHARF, N.P. at a glance

Quality data not reported

NPI registry status

Active

Issued 09/06/2007

NPI 1295920817

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

137 95% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

Specialty distribution in Missouri

How Adult Medicine Physician compares to other specialties among Missouri providers

Missouri providers

Adult Medicine Physician share within Missouri

1. Adult Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Medicine Physician share within Missouri

Specialty board-certification context

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

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

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

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

SANDRA SCHARF, N.P. is a Adult Medicine Physician provider practicing in O FALLON, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: N.P.. NPI: 1295920817. 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.

SANDRA SCHARF, N.P. appears in the CMS NPPES registry as a Adult Medicine Physician provider holding N.P. credentials at 1101 HIGHWAY K STE A, O FALLON, MO, 63366, with a listed phone of (844) 776-7200. NPI 1295920817 was issued on 09/06/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SCHARF 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 137 prescription claims written by this provider, covering 101 Medicare beneficiaries and totaling roughly $1K 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.

Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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

1101 HIGHWAY K STE A
O FALLON, MO 63366

Provider Details

NPI 1295920817
Specialty Adult Medicine Physician
Credentials N.P.
Gender Female
NPI Issued 09/06/2007

Hospital and facility affiliations

Facilities where SANDRA SCHARF, N.P. 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.

SSM MEDICAL GROUP INC
O FALLON, MO

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

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

137
Total Claims
$1K
Total Drug Cost
101
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
141
Total Day Supply
1,384
Generic Drug Cost
$1K
Antibiotic Claims
89

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
1.02
Gender Split
73% female / 27% 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
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
29
Penicillin V Potassium
15
Prednisone
14

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

Adult Medicine Physician Overview

How SANDRA SCHARF, N.P. fits within the Adult Medicine Physician landscape nationally.

2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider

SANDRA SCHARF, N.P.'s 137 claims are below the specialty average of 2,807.

Nearby Adult Medicine Physician Providers in Missouri

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

Compare Adult Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SANDRA SCHARF, N.P.'s specialty?
SANDRA SCHARF, N.P. specializes in Adult Medicine Physician and practices in O FALLON, Missouri. Credentials: N.P..
How much does SANDRA SCHARF, N.P. prescribe under Medicare Part D?
In 2023, SANDRA SCHARF, N.P. wrote 137 Medicare Part D claims totaling $1K in drug costs for 101 beneficiaries.
Where is SANDRA SCHARF, N.P. located?
SANDRA SCHARF, N.P. is located at 1101 HIGHWAY K STE A, O FALLON, MO, 63366. Phone: (844) 776-7200.
What is SANDRA SCHARF, N.P.'s NPI number?
SANDRA SCHARF, N.P.'s National Provider Identifier (NPI) is 1295920817, issued on 09/06/2007.
How many Adult Medicine Physician providers are there in the US?
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does SANDRA SCHARF, N.P. prescribe most often?
Based on 2023 Medicare Part D data, SANDRA SCHARF, N.P.'s most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Penicillin V Potassium, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SANDRA SCHARF, N.P. accept Medicare?
SANDRA SCHARF, N.P. appears in CMS Medicare data with 137 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SANDRA SCHARF, N.P.'s credentials?
SANDRA SCHARF, N.P.'s NPI is 1295920817 with credentials N.P.. 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