Stan Mathioulakis, MD
NPI 1912080847 · Internal Medicine Physician · Duarte, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stan Mathioulakis, MD is a Internal Medicine Physician provider in Duarte, CA (NPI 1912080847).
Provider details
- NPI number
- 1912080847
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A85470 (CA)
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,702 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 35 Minutes99232 | 743 | $81 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 278 | $51 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 237 | $99 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 140 | $79 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 108 | $139 |
| Hospital Discharge Day Management, 30 Minutes Or Less |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 125 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 604 | 134 |
| Amlodipine Besylate | 521 | 113 |
| Atorvastatin Calcium | 497 | 112 |
| Metformin Hcl | 299 | 77 |
| Omeprazole | 193 | 50 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 191 | 44 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$487 across 18 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
Registry dates
- Enumerated
- 2006-10-23
- Last updated
- 2020-02-21
- Certified
- 2020-02-21
Frequently asked questions
- What is Stan Mathioulakis's NPI number?
- Stan Mathioulakis's National Provider Identifier (NPI) is 1912080847, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stan Mathioulakis's specialty?
- Stan Mathioulakis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stan Mathioulakis located?
- Stan Mathioulakis's practice location on file with NPPES is 931 Buena Vista St, Duarte, CA 91010-1712.
- What is Stan Mathioulakis's phone number?
- The practice phone number listed in the NPPES registry for Stan Mathioulakis is (626) 358-3204.
- Does Stan Mathioulakis accept Medicare?
- Stan Mathioulakis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stan Mathioulakis's NPI active?
- Yes — Stan Mathioulakis's NPI (1912080847) is active in the NPPES registry as of the last update on 2020-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.