2026 NPPES data Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician NPI 1043639487 M.D.
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ERIC CHANG, M.D.

Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician in STAFFORD, 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
143
Medicare Part D claims · 57 beneficiaries · Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician avg: 611
Generic prescribing
55%
generic claims · 45% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$6.2K
25 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ERIC CHANG, M.D. filed 143 Medicare Part D claims in 2023 as a Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician in STAFFORD, Virginia, prescribing 55% generic.

143
Part D claims, 2023
55%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

ERIC CHANG, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

143 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

ERIC CHANG, 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).

What does the federal data show about ERIC CHANG, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/14/2014

NPI 1043639487

Primary specialty

Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician

Niche

568 US NPIs in this specialty

Medicare Part D claims

143 77% vs specialty avg

2023 prescription claims

Specialty avg: 611

Specialty distribution in Virginia

How Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician compares to other specialties among Virginia providers

Virginia providers

Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician share within Virginia

1. Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician share within Virginia

Specialty board-certification context

Estimated specialty board-certified rate — Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician ABMS/AOA estimate

Est. board-certified rate (Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & 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).

ERIC CHANG, M.D. appears in the CMS NPPES registry as a Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician provider holding M.D. credentials at 955 E WONDER RD, STAFFORD, VA, 22554, with a listed phone of (540) 741-7893. NPI 1043639487 was issued on 04/14/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHANG 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 57 Medicare beneficiaries and totaling roughly $57K in drug spend, split 45% brand-name and 55% generic by claim count, with an opioid prescribing rate of 10.5%. 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.

Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician is a narrow specialty nationwide, with 568 enrolled providers across 49 states and an average of 611 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

955 E WONDER RD
STAFFORD, VA 22554

Provider Details

NPI 1043639487
Specialty Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician
Credentials M.D.
Gender Male
NPI Issued 04/14/2014

Hospital and facility affiliations

Facilities where ERIC CHANG, 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.

MARY WASHINGTON HEALTHCARE PHYSICIANS
STAFFORD, VA

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 ERIC CHANG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$6.2K

Largest payer

INTUITIVE SURGICAL, 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 · Above average

ERIC CHANG, M.D. — brand share 45.0%
Specialty average (est.)

45% brand-name claims vs 55% 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
$57K
Total Drug Cost
57
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
257
Total Day Supply
6,901
Brand vs Generic
45% brand / 55% generic
Brand Drug Cost
$52K
Generic Drug Cost
$5K
Opioid Claims
15 (10.5% rate)
Antibiotic Claims
19

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
0.83
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.

What ERIC CHANG, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Estradiol
36
Gemtesa
Vibegron
34
Myrbetriq
Mirabegron
20
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
13
Oxycodone Hcl
12

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

Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician Overview

How ERIC CHANG, M.D. fits within the Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician landscape nationally.

568
Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician Providers in US
49
States with Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician
611
Avg Claims per Provider

ERIC CHANG, M.D.'s 143 claims are below the specialty average of 611.

Nearby Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician Providers in Virginia

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

Compare Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ERIC CHANG, M.D.'s specialty?
ERIC CHANG, M.D. specializes in Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician and practices in STAFFORD, Virginia. Credentials: M.D..
How much does ERIC CHANG, M.D. prescribe under Medicare Part D?
In 2023, ERIC CHANG, M.D. wrote 143 Medicare Part D claims totaling $57K in drug costs for 57 beneficiaries.
Where is ERIC CHANG, M.D. located?
ERIC CHANG, M.D. is located at 955 E WONDER RD, STAFFORD, VA, 22554. Phone: (540) 741-7893.
What is ERIC CHANG, M.D.'s NPI number?
ERIC CHANG, M.D.'s National Provider Identifier (NPI) is 1043639487, issued on 04/14/2014.
Does ERIC CHANG, M.D. prescribe more brand-name or generic drugs?
ERIC CHANG, M.D.'s prescribing is 45% brand-name and 55% generic drugs by claim count, with $52K in brand drug costs.
Does ERIC CHANG, M.D. prescribe opioids?
Yes, ERIC CHANG, M.D. had 15 opioid claims in 2023 with an opioid prescribing rate of 10.5%.
How many Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician providers are there in the US?
There are 568 Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician providers across 49 states in the US. The average Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician provider writes 611 Medicare Part D claims per year.
What drugs does ERIC CHANG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ERIC CHANG, M.D.'s most frequently prescribed drugs include Estradiol, Gemtesa, Myrbetriq. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ERIC CHANG, M.D. accept Medicare?
ERIC CHANG, M.D. appears in CMS Medicare data with 143 Part D claims and 57 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ERIC CHANG, M.D.'s credentials?
ERIC CHANG, M.D.'s NPI is 1043639487 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