2026 NPPES data Obstetrics & Gynecology Physician NPI 1922396837 D.O.
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HOLLY MCKIEL, D.O.

Obstetrics & Gynecology Physician in LEWES, Delaware. 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
262
Medicare Part D claims · 100 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

HOLLY MCKIEL, D.O. filed 262 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in LEWES, Delaware, prescribing 89% generic.

262
Part D claims, 2023
89%
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.

HOLLY MCKIEL, D.O.'s Medicare Part D volume vs every U.S. prescriber

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

262 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 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)

HOLLY MCKIEL, D.O. 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 HOLLY MCKIEL, D.O.?

Quality data not reported

NPI registry status

Active

Issued 07/12/2011

NPI 1922396837

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

262 46% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Delaware

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

Delaware providers

Obstetrics & Gynecology Physician share within Delaware

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

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).

HOLLY MCKIEL, D.O. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding D.O. credentials at 1535 SAVANNAH RD, LEWES, DE, 19958, with a listed phone of (302) 645-4700. NPI 1922396837 was issued on 07/12/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MCKIEL 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 262 prescription claims written by this provider, covering 100 Medicare beneficiaries and totaling roughly $20K in drug spend, split 11% brand-name and 89% 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 & 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

1535 SAVANNAH RD
LEWES, DE 19958

Provider Details

NPI 1922396837
Specialty Obstetrics & Gynecology Physician
Credentials D.O.
Gender Female
NPI Issued 07/12/2011

Hospital and facility affiliations

Facilities where HOLLY MCKIEL, D.O. 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.

WOMENS WELLNESS OF SOUTHERN DELAWARE LLC
LEWES, DE

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

HOLLY MCKIEL, D.O. — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 262 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.

262
Total Claims
$20K
Total Drug Cost
100
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
419
Total Day Supply
10,309
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$9K
Generic Drug Cost
$10K
Antibiotic Claims
28

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
0.78

Top Prescribed Drugs (Medicare Part D)

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

What HOLLY MCKIEL, D.O. 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
63
Clotrimazole-Betamethasone
Clotrimazole/Betamethasone Dip
32
Fluconazole
16
Ibuprofen
14
Ondansetron Odt
Ondansetron
13
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
12
Valacyclovir
Valacyclovir Hcl
12
Premarin
"Estrogens
N/A

* 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 HOLLY MCKIEL, D.O. 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

HOLLY MCKIEL, D.O.'s 262 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Delaware

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

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

Frequently Asked Questions

What is HOLLY MCKIEL, D.O.'s specialty?
HOLLY MCKIEL, D.O. specializes in Obstetrics & Gynecology Physician and practices in LEWES, Delaware. Credentials: D.O..
How much does HOLLY MCKIEL, D.O. prescribe under Medicare Part D?
In 2023, HOLLY MCKIEL, D.O. wrote 262 Medicare Part D claims totaling $20K in drug costs for 100 beneficiaries.
Where is HOLLY MCKIEL, D.O. located?
HOLLY MCKIEL, D.O. is located at 1535 SAVANNAH RD, LEWES, DE, 19958. Phone: (302) 645-4700.
What is HOLLY MCKIEL, D.O.'s NPI number?
HOLLY MCKIEL, D.O.'s National Provider Identifier (NPI) is 1922396837, issued on 07/12/2011.
Does HOLLY MCKIEL, D.O. prescribe more brand-name or generic drugs?
HOLLY MCKIEL, D.O.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $9K in brand drug costs.
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 HOLLY MCKIEL, D.O. prescribe most often?
Based on 2023 Medicare Part D data, HOLLY MCKIEL, D.O.'s most frequently prescribed drugs include Estradiol, Clotrimazole-Betamethasone, Fluconazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HOLLY MCKIEL, D.O. accept Medicare?
HOLLY MCKIEL, D.O. appears in CMS Medicare data with 262 Part D claims and 100 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HOLLY MCKIEL, D.O.'s credentials?
HOLLY MCKIEL, D.O.'s NPI is 1922396837 with credentials D.O.. 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