2026 NPPES data Obstetrics & Gynecology Physician NPI 1003387572 PA-C
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CARISSA MCILWAIN, PA-C

Obstetrics & Gynecology Physician in BALA CYNWYD, Pennsylvania. 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
73
Medicare Part D claims · 15 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Industry payments
$598.14
30 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CARISSA MCILWAIN, PA-C filed 73 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in BALA CYNWYD, Pennsylvania.

73
Part D claims, 2023
$598.14
industry payments (Sunshine Act)

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.

CARISSA MCILWAIN, PA-C's Medicare Part D volume vs every U.S. prescriber

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

73 0th percentile higher than 0% 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-eligible specialty (heuristic — not verified)

CARISSA MCILWAIN, PA-C 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).

What does the federal data show about CARISSA MCILWAIN, PA-C?

Quality data not reported

NPI registry status

Active

Issued 12/10/2018

NPI 1003387572

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

73 59% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Pennsylvania

How Obstetrics & Gynecology Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Obstetrics & Gynecology Physician share within Pennsylvania

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

Specialty board-certification context

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

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

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

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

CARISSA MCILWAIN, PA-C appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding PA-C credentials at 25 BALA AVE STE 205, BALA CYNWYD, PA, 19004, with a listed phone of (610) 667-6363. NPI 1003387572 was issued on 12/10/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MCILWAIN 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 73 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $6K 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.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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

25 BALA AVE STE 205
BALA CYNWYD, PA 19004

Provider Details

NPI 1003387572
Specialty Obstetrics & Gynecology Physician
Credentials PA-C
Gender Female
NPI Issued 12/10/2018

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 CARISSA MCILWAIN, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$598

Largest payer

Novo Nordisk 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.

License & disciplinary context — Pennsylvania PA-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to CARISSA MCILWAIN, PA-C. To verify CARISSA MCILWAIN, PA-C's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

73
Total Claims
$6K
Total Drug Cost
15
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
144
Total Day Supply
4,183
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
67.7 years
Avg HCC Risk Score
1.02
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.

Drug Claims
Synthroid
Levothyroxine Sodium
21

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

Obstetrics & Gynecology Physician Overview

How CARISSA MCILWAIN, PA-C fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

CARISSA MCILWAIN, PA-C's 73 claims are below the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Pennsylvania

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

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

Frequently Asked Questions

What is CARISSA MCILWAIN, PA-C's specialty?
CARISSA MCILWAIN, PA-C specializes in Obstetrics & Gynecology Physician and practices in BALA CYNWYD, Pennsylvania. Credentials: PA-C.
How much does CARISSA MCILWAIN, PA-C prescribe under Medicare Part D?
In 2023, CARISSA MCILWAIN, PA-C wrote 73 Medicare Part D claims totaling $6K in drug costs for 15 beneficiaries.
Where is CARISSA MCILWAIN, PA-C located?
CARISSA MCILWAIN, PA-C is located at 25 BALA AVE STE 205, BALA CYNWYD, PA, 19004. Phone: (610) 667-6363.
What is CARISSA MCILWAIN, PA-C's NPI number?
CARISSA MCILWAIN, PA-C's National Provider Identifier (NPI) is 1003387572, issued on 12/10/2018.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does CARISSA MCILWAIN, PA-C prescribe most often?
Based on 2023 Medicare Part D data, CARISSA MCILWAIN, PA-C's most frequently prescribed drugs include Synthroid. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CARISSA MCILWAIN, PA-C accept Medicare?
CARISSA MCILWAIN, PA-C appears in CMS Medicare data with 73 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CARISSA MCILWAIN, PA-C's credentials?
CARISSA MCILWAIN, PA-C's NPI is 1003387572 with credentials PA-C. 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