Katharine Dahl, MD
NPI 1073559621 · Nephrology Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katharine Dahl, MD is a Nephrology Physician provider in Phoenix, AZ (NPI 1073559621).
Provider details
- NPI number
- 1073559621
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 35343 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,037 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 575 | $112 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 187 | $119 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 89 | $15 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 71 | $164 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 52 | $74 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 88 | 34 |
| Furosemide | 78 | 31 |
| Amlodipine Besylate | 75 | 28 |
| Calcifediolbrand: Rayaldee | 60 | 11 |
| Spironolactone | 57 | 20 |
| Dapagliflozin Propanediolbrand: Farxiga | 56 | 19 |
| Torsemide | 45 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$432 across 22 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4901 W Mcdowell RdPhoenix, AZ 85035-4160Phone: (623) 849-9088Fax: (623) 849-9065
Registry dates
- Enumerated
- 2006-06-21
- Last updated
- 2018-06-08
Frequently asked questions
- What is Katharine Dahl's NPI number?
- Katharine Dahl's National Provider Identifier (NPI) is 1073559621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katharine Dahl's specialty?
- Katharine Dahl is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Katharine Dahl located?
- Katharine Dahl's practice location on file with NPPES is 2545 E Thomas Rd Ste 120, Phoenix, AZ 85016.
- What is Katharine Dahl's phone number?
- The practice phone number listed in the NPPES registry for Katharine Dahl is (026) 419-3378.
- Does Katharine Dahl accept Medicare?
- Katharine Dahl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katharine Dahl's NPI active?
- Yes — Katharine Dahl's NPI (1073559621) is active in the NPPES registry as of the last update on 2018-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.