NPPES file of Aug 9, 2026

Mary Manternach, FNP

Family Nurse Practitioner · Denver, CO

Mary Manternach, FNP is a family nurse practitioner with a practice address in Denver, Colorado, and NPI 1942965462, issued on Nov 1, 2021. Check the license (Colorado APN0996673-NP, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942965462
Name
Mary Manternach
Credential
FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
APN0996673-NP CO
Self-reported in NPPES; status is on the state search
Practice location
10500 Smith RD, Denver, CO 80239
Phone
(720) 913-3600
Enumerated
Nov 1, 2021
Record last updated
Nov 1, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20211201000431); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10500 Smith RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jennifer Gafford, PH.D.Psychologist1821310582
  2. Dasha Kotalik, LCSW, CACIIClinical Social Worker1285086215
  3. Margaret Reiland, PSY.D.Clinical Psychologist1720319122

Verify Mary Manternach in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this profession
    Search for license APN0996673-NP
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Colorado license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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82% fewer Medicare Part D claims than the average family nurse practitioner in 2024

240 Medicare Part D claims for 177 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Mary Manternach240
  2. Specialty average1,305

Most prescribed

  1. Prednisone31 claims
  2. Cefuroxime29 claims
  3. Amoxicillin-Clavulanate Potass28 claims
  4. Nitrofurantoin Mono-Macro16 claims
  5. Azithromycin14 claims
  6. Cephalexin14 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 52.9 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score45.5
  2. Costout of 100 · 30%23.2
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Nerve And Joint Institute PCThornton, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mary Manternach among 3,492 family nurse practitioner records in Colorado

Mary Manternach, FNP is one of 3,492 family nurse practitioner records with a practice address in Colorado. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 66% of them.

  • NPI issued2021 · 66% of these records are older, 27% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2021 · median 2019 among the 1,950 with a school on file
  • Record last updated2021 · 37% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

484 family nurse practitioner records list a practice address in Denver

They are 484 of the 25,068 NPPES records with a practice address in Denver, and 3,492 family nurse practitioner records in Colorado.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Marinda Chhay-BaldiDenver, CO 802391518881333
  2. Kasey Grohe, FNPDenver, CO 802391437691623
  3. Jamie Harrelson, C-FNPDenver, CO 802391356401426
  4. Jennifer Hooper, NPDenver, CO 802391144186149
  5. Udodiri Ogemdi-Isiguzo, FNPDenver, CO 802391609762434
  6. Anne Pankratz, FNP-BCDenver, CO 802391508415258
  7. Kelley Walker, N.P.Denver, CO 802391891069696
  8. Erin Bertelson, NP-CDenver, CO 802381134710338

Common questions

What is Mary Manternach, FNP's NPI number?

Mary Manternach, FNP's National Provider Identifier (NPI) is 1942965462, issued on Nov 1, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Mary Manternach, FNP located?

The NPPES record lists a practice address at 10500 Smith RD, Denver, CO, 80239. Phone: (720) 913-3600. Providers update this record themselves, so call before visiting.

How can I verify Mary Manternach, FNP's license?

NPPES lists Colorado license number APN0996673-NP, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.

How much does Mary Manternach, FNP prescribe under Medicare Part D?

In 2024, Mary Manternach, FNP had 240 Medicare Part D claims for 177 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

What is Mary Manternach, FNP's MIPS final score?

The 2023 MIPS final score is 52.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.