Karla Sue Wallen, NP-C
Family Nurse Practitioner · Longmont, CO
Karla Sue Wallen, NP-C is a family nurse practitioner with a practice address in Longmont, Colorado, and NPI 1598420739, issued on Nov 2, 2021. Check the license (Colorado APN.0997083-NP, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karla Sue Wallen
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- APN.0997083-NP CO
Self-reported in NPPES; status is on the state search - Practice location
- 2101 Ken Pratt Blvd Ste 200, Longmont, CO 80501
- Phone
- (303) 649-3500
- Enumerated
- Nov 2, 2021
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (303) 649-3501
- Medicare enrollment
- Enrolled (PECOS I20211222000990); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 3,492 in Colorado → Look up another NPI →
Also registered at 2101 Ken Pratt Blvd Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alice Vienneau, LCSWClinical Social Worker1740609866
Verify Karla Sue Wallen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license APN.0997083-NPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% more Medicare Part D claims than the average family nurse practitioner in 2024
1,573 Medicare Part D claims for 169 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 65 claims were for opioids.
Most prescribed
- Atorvastatin Calcium94 claims
- Lisinopril89 claims
- Levothyroxine Sodium87 claims
- Amlodipine Besylate65 claims
- Metformin Hcl Er46 claims
- Sertraline Hcl34 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.
Bills Medicare through one group practice
- Catholic Health Initiatives ColoradoLongmont, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karla Sue Wallen among 3,492 family nurse practitioner records in Colorado
Karla Sue Wallen, NP-C 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).
53 family nurse practitioner records list a practice address in Longmont
They are 53 of the 2,381 NPPES records with a practice address in Longmont, and 3,492 family nurse practitioner records in Colorado.
All 3,492 in Colorado → Every provider in Longmont → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Jennifer Allison, FNPLongmont, CO 805011982863064
- Stephanie Berry-CarterLongmont, CO 805011659589950
- Corinne Brock, FNP-C, MPHLongmont, CO 805011699078980
- Linda Henderson, FNPLongmont, CO 805011861404063
- Jean Housepian, FNPLongmont, CO 805011164636882
- Edna Hughes, NPLongmont, CO 805011316115728
- Jenifer Leitch, N.P.Longmont, CO 805011235376237
- Rosamelia Loredo, FNPLongmont, CO 805011982861027
Common questions
What is Karla Sue Wallen, NP-C's NPI number?
Karla Sue Wallen, NP-C's National Provider Identifier (NPI) is 1598420739, issued on Nov 2, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Karla Sue Wallen, NP-C located?
The NPPES record lists a practice address at 2101 Ken Pratt Blvd Ste 200, Longmont, CO, 80501. Phone: (303) 649-3500. Providers update this record themselves, so call before visiting.
How can I verify Karla Sue Wallen, NP-C's license?
NPPES lists Colorado license number APN.0997083-NP, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Karla Sue Wallen, NP-C prescribe under Medicare Part D?
In 2024, Karla Sue Wallen, NP-C had 1,573 Medicare Part D claims for 169 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.