2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1821039041 M.D.
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SANDRA WEBER, M.D.

Endocrinology, Diabetes & Metabolism Physician in GREENVILLE, South Carolina. 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
6K
Medicare Part D claims · 597 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
57%
generic claims · 43% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$751.28
31 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: SANDRA WEBER, M.D. is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in GREENVILLE, South Carolina with a Medicare Part D prescribing footprint of 6K claims across 597 beneficiaries — 43% brand-name prescribing . Industry payments of $751.28 across 31 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: SANDRA WEBER, M.D. filed 6,470 Medicare Part D claims in 2023 across GREENVILLE, South Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

SANDRA WEBER, M.D. 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 WEBER, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 06/09/2006

NPI 1821039041

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

6,470 145% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in South Carolina

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among South Carolina providers

South Carolina providers

Endocrinology, Diabetes & Metabolism Physician share within South Carolina

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within South Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism 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 WEBER, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider practicing in GREENVILLE, South Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1821039041. 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 WEBER, M.D. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 877 W FARIS RD, GREENVILLE, SC, 29605, with a listed phone of (864) 455-9031. NPI 1821039041 was issued on 06/09/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WEBER 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 6,470 prescription claims written by this provider, covering 597 Medicare beneficiaries and totaling roughly $2.9 million in drug spend, split 43% brand-name and 57% 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.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

877 W FARIS RD
GREENVILLE, SC 29605

Provider Details

NPI 1821039041
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials M.D.
Gender Female
NPI Issued 06/09/2006

Hospital and facility affiliations

Facilities where SANDRA WEBER, 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.

PRISMA HEALTH UNIVERSITY MEDICAL GROUP
GREENVILLE, SC

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 SANDRA WEBER, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$751

Largest payer

Insulet Corporation

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 · Above average

SANDRA WEBER, M.D. — brand share 43.0%
Specialty average (est.)

43% brand-name claims vs 57% generic, on 6,470 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.

6,470
Total Claims
$2.9M
Total Drug Cost
597
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15,030
Total Day Supply
444,961
Brand vs Generic
43% brand / 57% generic
Brand Drug Cost
$2.7M
Generic Drug Cost
$89K

Patient Demographics

Average Patient Age
70.3 years
Avg HCC Risk Score
1.44
Gender Split
71% female / 29% male
Age Distribution
<65: 105, 65-74: 284, 75-84: 178, 85+: 30

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
1,060
Synthroid
Levothyroxine Sodium
326
Atorvastatin Calcium
285
Metformin Hcl Er
Metformin Hcl
230
Trulicity
Dulaglutide
182
Ozempic
Semaglutide
160
Hydrocortisone
152
Jardiance
Empagliflozin
133
Rosuvastatin Calcium
116
Novolog Flexpen
Insulin Aspart
108

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

Endocrinology, Diabetes & Metabolism Physician Overview

How SANDRA WEBER, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

SANDRA WEBER, M.D.'s 6,470 claims are above the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as WEBER.

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SANDRA WEBER, M.D.'s specialty?
SANDRA WEBER, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in GREENVILLE, South Carolina. Credentials: M.D..
How much does SANDRA WEBER, M.D. prescribe under Medicare Part D?
In 2023, SANDRA WEBER, M.D. wrote 6,470 Medicare Part D claims totaling $2.9M in drug costs for 597 beneficiaries.
Where is SANDRA WEBER, M.D. located?
SANDRA WEBER, M.D. is located at 877 W FARIS RD, GREENVILLE, SC, 29605. Phone: (864) 455-9031.
What is SANDRA WEBER, M.D.'s NPI number?
SANDRA WEBER, M.D.'s National Provider Identifier (NPI) is 1821039041, issued on 06/09/2006.
Does SANDRA WEBER, M.D. prescribe more brand-name or generic drugs?
SANDRA WEBER, M.D.'s prescribing is 43% brand-name and 57% generic drugs by claim count, with $2.7M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does SANDRA WEBER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, SANDRA WEBER, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Synthroid, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SANDRA WEBER, M.D. accept Medicare?
SANDRA WEBER, M.D. appears in CMS Medicare data with 6,470 Part D claims and 597 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SANDRA WEBER, M.D.'s credentials?
SANDRA WEBER, M.D.'s NPI is 1821039041 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