2026 NPPES data Gynecology Physician NPI 1578577383 M.D.
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THAO DANG, M.D.

Gynecology Physician in FALLS CHURCH, Virginia. 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
183
Medicare Part D claims · 66 beneficiaries · Gynecology Physician avg: 295
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: THAO DANG, M.D. is a Gynecology Physician ([object Object]) practicing in FALLS CHURCH, Virginia with a Medicare Part D prescribing footprint of 183 claims across 66 beneficiaries — 10% brand-name prescribing .

What stands out: THAO DANG, M.D. filed 183 Medicare Part D claims in 2023 across FALLS CHURCH, Virginia. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

THAO DANG, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

THAO DANG, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/28/2006

NPI 1578577383

Primary specialty

Gynecology Physician

Niche

3,902 US NPIs in this specialty

Medicare Part D claims

183 38% vs specialty avg

2023 prescription claims

Specialty avg: 295

Specialty distribution in Virginia

How Gynecology Physician compares to other specialties among Virginia providers

Virginia providers

Gynecology Physician share within Virginia

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

Specialty board-certification context

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

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

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

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

THAO DANG, M.D. is a Gynecology Physician provider practicing in FALLS CHURCH, Virginia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1578577383. 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.

THAO DANG, M.D. appears in the CMS NPPES registry as a Gynecology Physician provider holding M.D. credentials at 7297 LEE HWY, FALLS CHURCH, VA, 22042, with a listed phone of (703) 241-2882. NPI 1578577383 was issued on 07/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DANG 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 183 prescription claims written by this provider, covering 66 Medicare beneficiaries and totaling roughly $36K in drug spend, split 10% brand-name and 90% 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.

Gynecology Physician is a narrow specialty nationwide, with 3,902 enrolled providers across 53 states and an average of 295 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

7297 LEE HWY
FALLS CHURCH, VA 22042

Provider Details

NPI 1578577383
Specialty Gynecology Physician
Credentials M.D.
Gender Female
NPI Issued 07/28/2006

Brand vs generic prescribing mix · Typical

THAO DANG, M.D. — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 183 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.

183
Total Claims
$36K
Total Drug Cost
66
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
501
Total Day Supply
14,658
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$29K
Generic Drug Cost
$7K

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
0.83

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Raloxifene Hcl
92
Alendronate Sodium
31
Prolia
Denosumab
17

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

Gynecology Physician Overview

How THAO DANG, M.D. fits within the Gynecology Physician landscape nationally.

3,902
Gynecology Physician Providers in US
53
States with Gynecology Physician
295
Avg Claims per Provider

THAO DANG, M.D.'s 183 claims are below the specialty average of 295.

Nearby Gynecology Physician Providers in Virginia

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

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

Frequently Asked Questions

What is THAO DANG, M.D.'s specialty?
THAO DANG, M.D. specializes in Gynecology Physician and practices in FALLS CHURCH, Virginia. Credentials: M.D..
How much does THAO DANG, M.D. prescribe under Medicare Part D?
In 2023, THAO DANG, M.D. wrote 183 Medicare Part D claims totaling $36K in drug costs for 66 beneficiaries.
Where is THAO DANG, M.D. located?
THAO DANG, M.D. is located at 7297 LEE HWY, FALLS CHURCH, VA, 22042. Phone: (703) 241-2882.
What is THAO DANG, M.D.'s NPI number?
THAO DANG, M.D.'s National Provider Identifier (NPI) is 1578577383, issued on 07/28/2006.
Does THAO DANG, M.D. prescribe more brand-name or generic drugs?
THAO DANG, M.D.'s prescribing is 10% brand-name and 90% generic drugs by claim count, with $29K in brand drug costs.
How many Gynecology Physician providers are there in the US?
There are 3,902 Gynecology Physician providers across 53 states in the US. The average Gynecology Physician provider writes 295 Medicare Part D claims per year.
What drugs does THAO DANG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, THAO DANG, M.D.'s most frequently prescribed drugs include Raloxifene Hcl, Alendronate Sodium, Prolia. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THAO DANG, M.D. accept Medicare?
THAO DANG, M.D. appears in CMS Medicare data with 183 Part D claims and 66 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THAO DANG, M.D.'s credentials?
THAO DANG, M.D.'s NPI is 1578577383 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