NPPES file of Aug 9, 2026

Crystal Guttman, APNP

Family Nurse Practitioner · Appleton, WI

Crystal Guttman, APNP is a family nurse practitioner with a practice address in Appleton, Wisconsin, and NPI 1629446331, issued on Sep 11, 2015. Check the license (Wisconsin 6637-33, as entered in NPPES) with the Wisconsin 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629446331
Name
Crystal Guttman
Credential
APNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
6637-33 WI
Self-reported in NPPES; status is on the state search
Practice location
3925 N Gateway Dr, Appleton, WI 54913
Phone
(920) 749-1171
Enumerated
Sep 11, 2015
Record last updated
Apr 28, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicaid ID
1629446331 WI
Medicare enrollment
Enrolled (PECOS I20151026000761); 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 3925 N Gateway Dr

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

  1. Avery AllardFamily Nurse Practitioner1154057214
  2. Andrea Aragon, NPFamily Nurse Practitioner1740060797
  3. Carrie Baum, R.D.Registered Dietitian1154447480
  4. Emily Beyer, NPFamily Nurse Practitioner1720795313
  5. Daisy Boehm, N.P.Family Nurse Practitioner1194925479
  6. Renee BrucknerFamily Nurse Practitioner1295614022

Verify Crystal Guttman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 6637-33
    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 Wisconsin 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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60% fewer Medicare Part D claims than the average family nurse practitioner in 2024

526 Medicare Part D claims for 148 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 23 claims were for opioids.

  1. Crystal Guttman526
  2. Specialty average1,305

Most prescribed

  1. Dexamethasone39 claims
  2. Anastrozole29 claims
  3. Prednisone29 claims
  4. Acyclovir27 claims
  5. Eliquis25 claims
  6. Potassium Chloride25 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.

Industry payments in 2024: $60.48

3 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Crystal Guttman$60.48
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Thedacare, IncorporatedAppleton, WI

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

Crystal Guttman among 2,814 family nurse practitioner records in Wisconsin

Crystal Guttman, APNP is one of 2,814 family nurse practitioner records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 34% of them.

  • NPI issued2015 · 34% of these records are older, 62% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2015 · median 2019 among the 1,740 with a school on file
  • Record last updated2016 · 42% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

148 family nurse practitioner records list a practice address in Appleton

They are 148 of the 3,249 NPPES records with a practice address in Appleton, and 2,814 family nurse practitioner records in Wisconsin.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Michelle Becker, APNPAppleton, WI 549131699184580
  2. Daisy Boehm, N.P.Appleton, WI 549131194925479
  3. Krista Cornelius, APNPAppleton, WI 549131619082021
  4. Kristin Day, NPAppleton, WI 549131497787014
  5. Shanna Dierker, FNP-BCAppleton, WI 549131558728337
  6. Kathleen ErdahlAppleton, WI 549131043748189
  7. Jenifer Grooms, CRNP, APRNAppleton, WI 549131104178896
  8. Nancy Gudex, NPAppleton, WI 549131316072226

Common questions

What is Crystal Guttman, APNP's NPI number?

Crystal Guttman, APNP's National Provider Identifier (NPI) is 1629446331, issued on Sep 11, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Crystal Guttman, APNP located?

The NPPES record lists a practice address at 3925 N Gateway Dr, Appleton, WI, 54913. Phone: (920) 749-1171. Providers update this record themselves, so call before visiting.

How can I verify Crystal Guttman, APNP's license?

NPPES lists Wisconsin license number 6637-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Crystal Guttman, APNP prescribe under Medicare Part D?

In 2024, Crystal Guttman, APNP had 526 Medicare Part D claims for 148 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

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.