2026 NPPES data Obstetrics Physician NPI 1689795809 M.D.
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STELLA WALVOORD, M.D.

Obstetrics 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
250
Medicare Part D claims · 91 beneficiaries · Obstetrics Physician avg: 319
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$110.56
6 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: STELLA WALVOORD, M.D. is a Obstetrics Physician ([object Object]) practicing in GREENVILLE, South Carolina with a Medicare Part D prescribing footprint of 250 claims across 91 beneficiaries — 9% brand-name prescribing . Industry payments of $110.56 across 6 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: STELLA WALVOORD, M.D. filed 250 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)

STELLA WALVOORD, 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).

STELLA WALVOORD, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/03/2007

NPI 1689795809

Primary specialty

Obstetrics Physician

Niche

1,402 US NPIs in this specialty

Medicare Part D claims

250 22% vs specialty avg

2023 prescription claims

Specialty avg: 319

Specialty distribution in South Carolina

How Obstetrics Physician compares to other specialties among South Carolina providers

South Carolina providers

Obstetrics Physician share within South Carolina

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

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).

STELLA WALVOORD, M.D. is a Obstetrics Physician provider practicing in GREENVILLE, South Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1689795809. 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.

STELLA WALVOORD, M.D. appears in the CMS NPPES registry as a Obstetrics Physician provider holding M.D. credentials at 2 MEMORIAL MEDICAL DR, GREENVILLE, SC, 29605, with a listed phone of (864) 295-4210. NPI 1689795809 was issued on 04/03/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALVOORD 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 250 prescription claims written by this provider, covering 91 Medicare beneficiaries and totaling roughly $16K in drug spend, split 9% brand-name and 91% 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

2 MEMORIAL MEDICAL DR
GREENVILLE, SC 29605

Provider Details

NPI 1689795809
Specialty Obstetrics Physician
Credentials M.D.
Gender Female
NPI Issued 04/03/2007

Hospital and facility affiliations

Facilities where STELLA WALVOORD, 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 STELLA WALVOORD, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$111

Largest payer

Sage Therapeutics, 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 · Generic-heavy

STELLA WALVOORD, M.D. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 250 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.

250
Total Claims
$16K
Total Drug Cost
91
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
468
Total Day Supply
12,842
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$4K
Generic Drug Cost
$11K
Antibiotic Claims
16

Patient Demographics

Average Patient Age
66.6 years
Avg HCC Risk Score
0.82
Gender Split
100% female / 0% male
Age Distribution
<65: 19, 65-74: 55, 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.

Drug Claims
Estradiol
53
Clobetasol Propionate
21
Fluconazole
19
Dotti
Estradiol
12
Estradiol (Twice Weekly)
Estradiol
12
Rizatriptan
Rizatriptan Benzoate
11

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

Obstetrics Physician Overview

How STELLA WALVOORD, M.D. fits within the Obstetrics Physician landscape nationally.

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

STELLA WALVOORD, M.D.'s 250 claims are below the specialty average of 319.

Nearby Obstetrics Physician Providers in South Carolina

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

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

Frequently Asked Questions

What is STELLA WALVOORD, M.D.'s specialty?
STELLA WALVOORD, M.D. specializes in Obstetrics Physician and practices in GREENVILLE, South Carolina. Credentials: M.D..
How much does STELLA WALVOORD, M.D. prescribe under Medicare Part D?
In 2023, STELLA WALVOORD, M.D. wrote 250 Medicare Part D claims totaling $16K in drug costs for 91 beneficiaries.
Where is STELLA WALVOORD, M.D. located?
STELLA WALVOORD, M.D. is located at 2 MEMORIAL MEDICAL DR, GREENVILLE, SC, 29605. Phone: (864) 295-4210.
What is STELLA WALVOORD, M.D.'s NPI number?
STELLA WALVOORD, M.D.'s National Provider Identifier (NPI) is 1689795809, issued on 04/03/2007.
Does STELLA WALVOORD, M.D. prescribe more brand-name or generic drugs?
STELLA WALVOORD, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $4K 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 STELLA WALVOORD, M.D. prescribe most often?
Based on 2023 Medicare Part D data, STELLA WALVOORD, M.D.'s most frequently prescribed drugs include Estradiol, Clobetasol Propionate, Fluconazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STELLA WALVOORD, M.D. accept Medicare?
STELLA WALVOORD, M.D. appears in CMS Medicare data with 250 Part D claims and 91 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STELLA WALVOORD, M.D.'s credentials?
STELLA WALVOORD, M.D.'s NPI is 1689795809 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