2026 NPPES data Registered Nurse NPI 1487026928 AGNP
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Carolyn Summer, AGNP

Registered Nurse in Washington, District of Columbia. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 175,652 in Registered Nurse, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
229
Medicare Part D claims · 26 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
63%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Carolyn Summer, AGNP filed 229 Medicare Part D claims in 2023 as a Registered Nurse in Washington, District of Columbia, prescribing 63% generic.

229
Part D claims, 2023
63%
generic prescribing

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.

Carolyn Summer, AGNP's Medicare Part D volume vs every U.S. prescriber

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

229 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. 2K+: 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

What does the federal data show about Carolyn Summer, AGNP?

Quality data not reported

NPI registry status

Active

Issued 10/23/2015

NPI 1487026928

Primary specialty

Registered Nurse

High-volume

175,652 US NPIs in this specialty

Medicare Part D claims

229 77% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

Specialty distribution in District of Columbia

How Registered Nurse compares to other specialties among District of Columbia providers

District of Columbia providers

Largest specialties in District of Columbia (% of in-state providers)

Home Health Aide - 20.8%Home Health Aide20.8%Personal Care Attendant - 11.5%Personal Care Attendant11.5%Case Manager/Care Coordinator - 7%Case Manager/Care Coordinator7%Student in an Organized Health Care Education/Training Program - 6.4%Student in an Organized Health Care Education/Training Program6.4%Clinical Social Worker - 4%Clinical Social Worker4%Internal Medicine Physician - 2.1%Internal Medicine Physician2.1%Registered Nurse - 1.7%Registered Nurse1.7%
Largest specialties in District of Columbia (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Registered Nurse. Verify directly:

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).

Carolyn Summer, AGNP appears in the CMS NPPES registry as a Registered Nurse provider holding AGNP credentials at 1251B SARATOGA AVE NE, Washington, DC, 20018, with a listed phone of (202) 832-8818. NPI 1487026928 was issued on 10/23/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Summer 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 229 prescription claims written by this provider, covering 26 Medicare beneficiaries and totaling roughly $38K in drug spend, split 22% brand-name and 63% 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.

Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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

1251B SARATOGA AVE NE
Washington, DC 20018

Provider Details

NPI 1487026928
Specialty Registered Nurse
Credentials AGNP
Gender Female
NPI Issued 10/23/2015

Hospital and facility affiliations

Facilities where Carolyn Summer, AGNP 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.

Unity Health Care Inc.
Washington, DC

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

Carolyn Summer, AGNP - brand share 22.0%
Registered Nurse average

22% brand-name claims vs 63% generic, on 229 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.

229
Total Claims
$38K
Total Drug Cost
26
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
244
Total Day Supply
7,004
Brand vs Generic
22% brand / 63% generic
Brand Drug Cost
$36K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
64.7 years
Avg HCC Risk Score
1.54
Age Distribution
<65: 11, 65-74: 14, 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 Carolyn Summer, AGNP 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
Atorvastatin Calcium
32
Carvedilol
16
Farxiga
Dapagliflozin Propanediol
13
Ozempic
Semaglutide
12
Amlodipine Besylate
11
Bydureon Bcise
Exenatide Microspheres
11
Pantoprazole Sodium
11
Prenatal Vitamin Plus Low Iron
"Pnv
N/A

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

Registered Nurse Overview

How Carolyn Summer, AGNP fits within the Registered Nurse landscape nationally.

175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider

Carolyn Summer, AGNP's 229 claims are below the specialty average of 1,000.

Nearby Registered Nurse Providers in District of Columbia

Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Summer.

Compare Registered Nurse nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the District of Columbia medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Registered Nurse peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Carolyn Summer, AGNP's specialty?
Carolyn Summer, AGNP specializes in Registered Nurse and practices in Washington, District of Columbia. Credentials: AGNP.
How much does Carolyn Summer, AGNP prescribe under Medicare Part D?
In 2023, Carolyn Summer, AGNP wrote 229 Medicare Part D claims totaling $38K in drug costs for 26 beneficiaries.
Where is Carolyn Summer, AGNP located?
Carolyn Summer, AGNP is located at 1251B SARATOGA AVE NE, Washington, DC, 20018. Phone: (202) 832-8818.
What is Carolyn Summer, AGNP's NPI number?
Carolyn Summer, AGNP's National Provider Identifier (NPI) is 1487026928, issued on 10/23/2015.
Does Carolyn Summer, AGNP prescribe more brand-name or generic drugs?
Carolyn Summer, AGNP's prescribing is 22% brand-name and 63% generic drugs by claim count, with $36K in brand drug costs.
How many Registered Nurse providers are there in the US?
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does Carolyn Summer, AGNP prescribe most often?
Based on 2023 Medicare Part D data, Carolyn Summer, AGNP's most frequently prescribed drugs include Atorvastatin Calcium, Carvedilol, Farxiga. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carolyn Summer, AGNP accept Medicare?
Carolyn Summer, AGNP appears in CMS Medicare data with 229 Part D claims and 26 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carolyn Summer, AGNP's credentials?
Carolyn Summer, AGNP's NPI is 1487026928 with credentials AGNP. 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

Compiled from official public sources by the PlainDoctor editorial team.