Amy M. Maass, APNP
Nurse Practitioner · Neenah, WI
Amy M. Maass, APNP is a nurse practitioner with a practice address in Neenah, Wisconsin, and NPI 1659857977, issued on Jul 19, 2018. Check the license (Wisconsin 8660-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Amy M. Maass
- Credential
- APNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 8660-33 WI
Self-reported in NPPES; status is on the state search - Practice location
- 130 2ND St, Neenah, WI 54956
- Phone
- (920) 729-2933
- Enumerated
- Jul 19, 2018
- Record last updated
- Jan 29, 2026
- Fax
- (920) 727-4511
- Medicare enrollment
- Enrolled (PECOS I20181113000808); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,995 in Wisconsin → Look up another NPI →
Also registered at 130 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Amy M. Maass in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 8660-33Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.8 times the Medicare Part D claims of the average nurse practitioner in 2024
4,249 Medicare Part D claims for 350 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 2,181 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen822 claims
- Gabapentin483 claims
- Pregabalin371 claims
- Tizanidine Hcl270 claims
- Oxycodone-Acetaminophen223 claims
- Morphine Sulfate202 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): 97.3 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $510.33
21 payments; by number, the most common kind was food and beverage; the largest payer was Nevro Corp. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Thedacare, IncorporatedNeenah, WI
- Wisconsin Spine And Pain SCSheboygan, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy M. Maass among 3,995 nurse practitioner records in Wisconsin
Amy M. Maass, APNP is one of 3,995 nurse practitioner records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 61% of them.
- NPI issued2018 · 61% of these records are older, 35% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2018 · median 2017 among the 2,701 with a school on file
- Record last updated2026 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
57 nurse practitioner records list a practice address in Neenah
They are 57 of the 919 NPPES records with a practice address in Neenah, and 3,995 nurse practitioner records in Wisconsin.
All 3,995 in Wisconsin → Every provider in Neenah → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Mary Barker, FNP-CNeenah, WI 549561902807639
- Penny Bernards, ARNPNeenah, WI 549561760425573
- Janet Gruendemann, NPNeenah, WI 549561598750903
- Tricia Koch, A.P.N.P.Neenah, WI 549561538263223
- Jane Levine, NPNeenah, WI 549561821105370
- Jessica Lillie, A.P.N.PNeenah, WI 549561932100096
- Christine Munson, NPNeenah, WI 549561427133834
- Kristin Neilsen, NPNeenah, WI 549561902841497
Common questions
What is Amy M. Maass, APNP's NPI number?
Amy M. Maass, APNP's National Provider Identifier (NPI) is 1659857977, issued on Jul 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Amy M. Maass, APNP located?
The NPPES record lists a practice address at 130 2ND St, Neenah, WI, 54956. Phone: (920) 729-2933. Providers update this record themselves, so call before visiting.
How can I verify Amy M. Maass, APNP's license?
NPPES lists Wisconsin license number 8660-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Amy M. Maass, APNP prescribe under Medicare Part D?
In 2024, Amy M. Maass, APNP had 4,249 Medicare Part D claims for 350 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Amy M. Maass, APNP's MIPS final score?
The 2023 MIPS final score is 97.3 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.