Colleen Diferdinando, APN
Family Nurse Practitioner · Denver, CO
Colleen Diferdinando, APN is a family nurse practitioner with a practice address in Denver, Colorado, and NPI 1558946533, issued on Mar 11, 2021. Check the license (Colorado APN.0995334-NP, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Colleen Diferdinando
- Credential
- APN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- APN.0995334-NP CO
GAA-NP005355 GA
APRN-5883 HI
116864 NE
88995 NM
Self-reported in NPPES; status is on the state search - Practice location
- 8354 E Northfield Blvd Ste 3700, Denver, CO 80238
- Phone
- (866) 849-0692
- Enumerated
- Mar 11, 2021
- Record last updated
- Aug 6, 2026
- Medicare enrollment
- Enrolled (PECOS I20210323002020); 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 8354 E Northfield Blvd Ste 3700
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Colleen Diferdinando 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.0995334-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
2.6 times the Medicare Part D claims of the average family nurse practitioner in 2024
3,332 Medicare Part D claims for 279 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 171 claims were for opioids.
Most prescribed
- Levothyroxine Sodium179 claims
- Atorvastatin Calcium146 claims
- Lisinopril107 claims
- Amlodipine Besylate90 claims
- Gabapentin84 claims
- Albuterol Sulfate Hfa81 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: $178.38
8 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. 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.
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
- Rocky Mountain Primary Care , PCWestminster, CO
- Select Physical Therapy OF West Denver Limited PartnershipBoulder, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colleen Diferdinando among 3,492 family nurse practitioner records in Colorado
Colleen Diferdinando, APN 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
- Graduated2019 · median 2019 among the 1,950 with a school on file
- Record last updated2026 · 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.
All 3,492 in Colorado → Every provider in Denver → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Erin Bertelson, NP-CDenver, CO 802381134710338
- Ashley Doepker, FNP-CDenver, CO 802381942676929
- Jessica Eulberg, FNP-CDenver, CO 802381225576309
- Gary Foster, FNP-BCDenver, CO 802381770964421
- Adriana Garcia, NP-CDenver, CO 802381174281372
- Laura Heyse, FNP-BCDenver, CO 802381427641083
- Brianna Kellett, APRN, NP-CDenver, CO 802381053049403
- Sarah Kirsch, FNP-CDenver, CO 802381356818892
Common questions
What is Colleen Diferdinando, APN's NPI number?
Colleen Diferdinando, APN's National Provider Identifier (NPI) is 1558946533, issued on Mar 11, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Colleen Diferdinando, APN located?
The NPPES record lists a practice address at 8354 E Northfield Blvd Ste 3700, Denver, CO, 80238. Phone: (866) 849-0692. Providers update this record themselves, so call before visiting.
How can I verify Colleen Diferdinando, APN's license?
NPPES lists Colorado license number APN.0995334-NP, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Colleen Diferdinando, APN prescribe under Medicare Part D?
In 2024, Colleen Diferdinando, APN had 3,332 Medicare Part D claims for 279 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.