2026 NPPES data Gerontology Nurse Practitioner NPI 1346858404 NP
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KEENAN GRIEGO, NP

Gerontology Nurse Practitioner in COLORADO SPRINGS, Colorado. 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
545
Medicare Part D claims · 182 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$21.61
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KEENAN GRIEGO, NP is a Gerontology Nurse Practitioner ([object Object]) practicing in COLORADO SPRINGS, Colorado with a Medicare Part D prescribing footprint of 545 claims across 182 beneficiaries — 8% brand-name prescribing . Industry payments of $21.61 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KEENAN GRIEGO, NP filed 545 Medicare Part D claims in 2023 across COLORADO SPRINGS, Colorado. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

KEENAN GRIEGO, NP at a glance

Quality data not reported

NPI registry status

Active

Issued 07/15/2020

NPI 1346858404

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

545 58% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

Specialty distribution in Colorado

How Gerontology Nurse Practitioner compares to other specialties among Colorado providers

Colorado providers

Gerontology Nurse Practitioner share within Colorado

1. Gerontology Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gerontology Nurse Practitioner share within Colorado

Specialty board-certification context

Estimated specialty board-certified rate — Gerontology Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Gerontology Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Gerontology Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Gerontology Nurse Practitioner) — 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).

KEENAN GRIEGO, NP is a Gerontology Nurse Practitioner provider practicing in COLORADO SPRINGS, Colorado, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: NP. NPI: 1346858404. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

KEENAN GRIEGO, NP appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding NP credentials at 5410 POWERS CENTER PT STE 230, COLORADO SPRINGS, CO, 80920, with a listed phone of (719) 282-6100. NPI 1346858404 was issued on 07/15/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRIEGO 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 545 prescription claims written by this provider, covering 182 Medicare beneficiaries and totaling roughly $41K in drug spend, split 8% brand-name and 92% 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.

Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,625 enrolled providers across 54 states and an average of 1,283 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

5410 POWERS CENTER PT STE 230
COLORADO SPRINGS, CO 80920

Provider Details

NPI 1346858404
Specialty Gerontology Nurse Practitioner
Credentials NP
Gender Male
NPI Issued 07/15/2020

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 KEENAN GRIEGO, NP. Source: openpaymentsdata.cms.gov.

Total received

$22

Largest payer

Hologic Sales and Service, LLC

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.

Brand vs generic prescribing mix · Generic-heavy

KEENAN GRIEGO, NP — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 545 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.

545
Total Claims
$41K
Total Drug Cost
182
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,192
Total Day Supply
34,500
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$29K
Generic Drug Cost
$13K
Antibiotic Claims
27

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
1.20
Gender Split
59% female / 41% male
Age Distribution
<65: 25, 65-74: 79, 75-84: 57, 85+: 21

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
51
Baclofen
28
Lisinopril
22
Amlodipine Besylate
18
Losartan Potassium
18
Gabapentin
14
Hydrochlorothiazide
13
Metoprolol Succinate
13
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
13
Potassium Chloride
12

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

Gerontology Nurse Practitioner Overview

How KEENAN GRIEGO, NP fits within the Gerontology Nurse Practitioner landscape nationally.

9,625
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider

KEENAN GRIEGO, NP's 545 claims are below the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in Colorado

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

Compare Gerontology Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is KEENAN GRIEGO, NP's specialty?
KEENAN GRIEGO, NP specializes in Gerontology Nurse Practitioner and practices in COLORADO SPRINGS, Colorado. Credentials: NP.
How much does KEENAN GRIEGO, NP prescribe under Medicare Part D?
In 2023, KEENAN GRIEGO, NP wrote 545 Medicare Part D claims totaling $41K in drug costs for 182 beneficiaries.
Where is KEENAN GRIEGO, NP located?
KEENAN GRIEGO, NP is located at 5410 POWERS CENTER PT STE 230, COLORADO SPRINGS, CO, 80920. Phone: (719) 282-6100.
What is KEENAN GRIEGO, NP's NPI number?
KEENAN GRIEGO, NP's National Provider Identifier (NPI) is 1346858404, issued on 07/15/2020.
Does KEENAN GRIEGO, NP prescribe more brand-name or generic drugs?
KEENAN GRIEGO, NP's prescribing is 8% brand-name and 92% generic drugs by claim count, with $29K in brand drug costs.
How many Gerontology Nurse Practitioner providers are there in the US?
There are 9,625 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,283 Medicare Part D claims per year.
What drugs does KEENAN GRIEGO, NP prescribe most often?
Based on 2023 Medicare Part D data, KEENAN GRIEGO, NP's most frequently prescribed drugs include Atorvastatin Calcium, Baclofen, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KEENAN GRIEGO, NP accept Medicare?
KEENAN GRIEGO, NP appears in CMS Medicare data with 545 Part D claims and 182 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KEENAN GRIEGO, NP's credentials?
KEENAN GRIEGO, NP's NPI is 1346858404 with credentials NP. 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