David Alster
NPI 1164457339 · Endocrinology, Diabetes & Metabolism Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Alster is a Endocrinology, Diabetes & Metabolism Physician provider in Tucson, AZ (NPI 1164457339).
Provider details
- NPI number
- 1164457339
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 22096 (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
3,403 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,853 | $126 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 641 | $34 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 396 | $88 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 219 | $163 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 99 | $108 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 59 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 847 | 268 |
| Methimazole | 306 | 96 |
| Levothyroxine Sodiumbrand: Synthroid | 157 | 44 |
| Testosterone Cypionate | 153 | 39 |
| Metformin Hcl | 142 | 49 |
| Liothyronine Sodium | 100 | 30 |
| Atorvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$130 across 7 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)
- 1773 W Saint Marys Rd Ste 202Tucson, AZ 85745-2654Phone: (520) 297-0404
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2021-10-22
- Certified
- 2021-10-22
Frequently asked questions
- What is David Alster's NPI number?
- David Alster's National Provider Identifier (NPI) is 1164457339, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Alster's specialty?
- David Alster is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is David Alster located?
- David Alster's practice location on file with NPPES is 5910 N La Cholla Blvd, Tucson, AZ 85741-3535.
- What is David Alster's phone number?
- The practice phone number listed in the NPPES registry for David Alster is (520) 297-0404.
- Does David Alster accept Medicare?
- David Alster is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Alster's NPI active?
- Yes — David Alster's NPI (1164457339) is active in the NPPES registry as of the last update on 2021-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.