2026 NPPES data Obstetrics & Gynecology Physician NPI 1821071622 MD
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EMILY HARRISON, MD

Obstetrics & Gynecology Physician in WEST WARWICK, Rhode Island. 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
2K
Medicare Part D claims · 134 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

EMILY HARRISON, MD filed 1,645 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in WEST WARWICK, Rhode Island, prescribing 84% generic.

2K
Part D claims, 2023
84%
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.

EMILY HARRISON, MD's Medicare Part D volume vs every U.S. prescriber

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

1,645 Top 18% higher than 82% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). This entry sits in this band. 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)

EMILY HARRISON, MD 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 EMILY HARRISON, MD?

Quality data not reported

NPI registry status

Active

Issued 11/25/2005

NPI 1821071622

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

1,645 819% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Rhode Island

How Obstetrics & Gynecology Physician compares to other specialties among Rhode Island providers

Rhode Island providers

Obstetrics & Gynecology Physician share within Rhode Island

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

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).

EMILY HARRISON, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at 186 PROVIDENCE ST, WEST WARWICK, RI, 02893, with a listed phone of (401) 615-2800. NPI 1821071622 was issued on 11/25/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HARRISON 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 1,645 prescription claims written by this provider, covering 134 Medicare beneficiaries and totaling roughly $211K in drug spend, split 16% brand-name and 84% generic by claim count, with an opioid prescribing rate of 1.1%. 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

186 PROVIDENCE ST
WEST WARWICK, RI 02893

Provider Details

NPI 1821071622
Specialty Obstetrics & Gynecology Physician
Credentials MD
Gender Female
NPI Issued 11/25/2005

Hospital and facility affiliations

Facilities where EMILY HARRISON, MD 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.

THUNDERMIST HEALTH CENTER
WEST WARWICK, RI

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

EMILY HARRISON, MD — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 1,645 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.

1,645
Total Claims
$211K
Total Drug Cost
134
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,858
Total Day Supply
81,219
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$171K
Generic Drug Cost
$40K
Opioid Claims
18 (1.1% rate)
Antibiotic Claims
25

Patient Demographics

Average Patient Age
65.0 years
Avg HCC Risk Score
1.38
Gender Split
70% female / 30% male
Age Distribution
<65: 49, 65-74: 63, 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.

What EMILY HARRISON, MD 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
Lisinopril
104
Amlodipine Besylate
94
Atorvastatin Calcium
93
Gabapentin
83
Omeprazole
61
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
54
Hydrochlorothiazide
38
Levothyroxine Sodium
38
Pantoprazole Sodium
36
Montelukast Sodium
34

* 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 EMILY HARRISON, MD 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

EMILY HARRISON, MD's 1,645 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Rhode Island

Other clinicians with the same primary specialty enrolled in Rhode Island, drawn from the same CMS NPPES roster as HARRISON.

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

Frequently Asked Questions

What is EMILY HARRISON, MD's specialty?
EMILY HARRISON, MD specializes in Obstetrics & Gynecology Physician and practices in WEST WARWICK, Rhode Island. Credentials: MD.
How much does EMILY HARRISON, MD prescribe under Medicare Part D?
In 2023, EMILY HARRISON, MD wrote 1,645 Medicare Part D claims totaling $211K in drug costs for 134 beneficiaries.
Where is EMILY HARRISON, MD located?
EMILY HARRISON, MD is located at 186 PROVIDENCE ST, WEST WARWICK, RI, 02893. Phone: (401) 615-2800.
What is EMILY HARRISON, MD's NPI number?
EMILY HARRISON, MD's National Provider Identifier (NPI) is 1821071622, issued on 11/25/2005.
Does EMILY HARRISON, MD prescribe more brand-name or generic drugs?
EMILY HARRISON, MD's prescribing is 16% brand-name and 84% generic drugs by claim count, with $171K in brand drug costs.
Does EMILY HARRISON, MD prescribe opioids?
Yes, EMILY HARRISON, MD had 18 opioid claims in 2023 with an opioid prescribing rate of 1.1%.
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 EMILY HARRISON, MD prescribe most often?
Based on 2023 Medicare Part D data, EMILY HARRISON, MD's most frequently prescribed drugs include Lisinopril, Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does EMILY HARRISON, MD accept Medicare?
EMILY HARRISON, MD appears in CMS Medicare data with 1,645 Part D claims and 134 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify EMILY HARRISON, MD's credentials?
EMILY HARRISON, MD's NPI is 1821071622 with credentials MD. 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