2026 NPPES data Emergency Medicine Physician NPI 1609891860 M.D.
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SUSAN KEEN, M.D.

Emergency Medicine Physician in GREENVILLE, North Carolina. 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
16K
Medicare Part D claims · 1K beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

SUSAN KEEN, M.D. filed 16,278 Medicare Part D claims in 2023 as a Emergency Medicine Physician in GREENVILLE, North Carolina, prescribing 89% generic.

16K
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.

SUSAN KEEN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

16,278 Top 2% higher than 98% 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%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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)

SUSAN KEEN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations — 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 SUSAN KEEN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/12/2006

NPI 1609891860

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

16,278 4524% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in North Carolina

How Emergency Medicine Physician compares to other specialties among North Carolina providers

North Carolina providers

Emergency Medicine Physician share within North Carolina

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within North Carolina

Specialty board-certification context

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

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

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

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

SUSAN KEEN, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 1850 W ARLINGTON BLVD, GREENVILLE, NC, 27834, with a listed phone of (252) 413-6641. NPI 1609891860 was issued on 07/12/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KEEN 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 16,278 prescription claims written by this provider, covering 1,035 Medicare beneficiaries and totaling roughly $1.3 million in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 3.7%. 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.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

1850 W ARLINGTON BLVD
GREENVILLE, NC 27834

Provider Details

NPI 1609891860
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 07/12/2006

Hospital and facility affiliations

Facilities where SUSAN KEEN, 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.

BROAD RIVER REHABILITATION
CHARLOTTE, NC
PHYSICIANS EAST PA
FARMVILLE, NC
PROACTIVE THERAPY OF NORTH CAROLINA INC
WILSON, NC

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

SUSAN KEEN, M.D. — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 16,278 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.

16,278
Total Claims
$1.3M
Total Drug Cost
1,035
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
31,328
Total Day Supply
898,487
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$1.0M
Generic Drug Cost
$250K
Opioid Claims
596 (3.7% rate)
Antibiotic Claims
428

Patient Demographics

Average Patient Age
73.4 years
Avg HCC Risk Score
1.09
Gender Split
63% female / 37% male
Age Distribution
<65: 81, 65-74: 505, 75-84: 349, 85+: 100

Top Prescribed Drugs (Medicare Part D)

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

What SUSAN KEEN, 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
Amlodipine Besylate
667
Omeprazole
478
Levothyroxine Sodium
452
Gabapentin
442
Losartan Potassium
424
Atorvastatin Calcium
418
Lisinopril
418
Hydrochlorothiazide
378
Rosuvastatin Calcium
364
Pravastatin Sodium
260

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

Emergency Medicine Physician Overview

How SUSAN KEEN, M.D. fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

SUSAN KEEN, M.D.'s 16,278 claims are above the specialty average of 352.

Nearby Emergency Medicine Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as KEEN.

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SUSAN KEEN, M.D.'s specialty?
SUSAN KEEN, M.D. specializes in Emergency Medicine Physician and practices in GREENVILLE, North Carolina. Credentials: M.D..
How much does SUSAN KEEN, M.D. prescribe under Medicare Part D?
In 2023, SUSAN KEEN, M.D. wrote 16,278 Medicare Part D claims totaling $1.3M in drug costs for 1,035 beneficiaries.
Where is SUSAN KEEN, M.D. located?
SUSAN KEEN, M.D. is located at 1850 W ARLINGTON BLVD, GREENVILLE, NC, 27834. Phone: (252) 413-6641.
What is SUSAN KEEN, M.D.'s NPI number?
SUSAN KEEN, M.D.'s National Provider Identifier (NPI) is 1609891860, issued on 07/12/2006.
Does SUSAN KEEN, M.D. prescribe more brand-name or generic drugs?
SUSAN KEEN, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $1.0M in brand drug costs.
Does SUSAN KEEN, M.D. prescribe opioids?
Yes, SUSAN KEEN, M.D. had 596 opioid claims in 2023 with an opioid prescribing rate of 3.7%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does SUSAN KEEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, SUSAN KEEN, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Omeprazole, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SUSAN KEEN, M.D. accept Medicare?
SUSAN KEEN, M.D. appears in CMS Medicare data with 16,278 Part D claims and 1,035 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SUSAN KEEN, M.D.'s credentials?
SUSAN KEEN, M.D.'s NPI is 1609891860 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