Chelsea Diehl, APNP
NPI 1144805300 · Family Nurse Practitioner · Madison, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chelsea Diehl, APNP is a Family Nurse Practitioner provider in Madison, WI (NPI 1144805300).
Provider details
- NPI number
- 1144805300
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 10764-33 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
158 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 75 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $101 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 19 | $62 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 15 | $133 |
Typical Medicare-allowed amounts for these services range $9–$133 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 246 | 92 |
| Metoprolol Succinate | 211 | 93 |
| Furosemide | 173 | 75 |
| Carvedilol | 154 | 60 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 151 | 60 |
| Metoprolol Tartrate | 121 | 42 |
| Losartan Potassium |
Practice location
Mailing address
Additional practice locations (1)
- 515 22nd AveMonroe, WI 53566-1598Phone: (608) 324-1049
Registry dates
- Enumerated
- 2021-03-09
- Last updated
- 2025-09-17
- Certified
- 2025-09-17
Frequently asked questions
- What is Chelsea Diehl's NPI number?
- Chelsea Diehl's National Provider Identifier (NPI) is 1144805300, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chelsea Diehl's specialty?
- Chelsea Diehl is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Chelsea Diehl located?
- Chelsea Diehl's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792-1830.
- What is Chelsea Diehl's phone number?
- The practice phone number listed in the NPPES registry for Chelsea Diehl is (608) 263-1530.
- Does Chelsea Diehl accept Medicare?
- Chelsea Diehl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chelsea Diehl's NPI active?
- Yes — Chelsea Diehl's NPI (1144805300) is active in the NPPES registry as of the last update on 2025-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.