Mason Long
NPI 1790854537 · Internal Medicine Physician · Saint Augustine, FL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mason Long is a Internal Medicine Physician provider in Saint Augustine, FL (NPI 1790854537).
Provider details
- NPI number
- 1790854537
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- ME0055529 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,325 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 208 | $124 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 196 | $9 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 179 | $22 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 125 | $176 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 121 | $125 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 186 | 51 |
| Losartan Potassium | 151 | 39 |
| Atorvastatin Calcium | 146 | 39 |
| Alprazolam | 119 | 24 |
| Amlodipine Besylate | 88 | 26 |
| Metoprolol Succinate | 84 | 19 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-07
- Last updated
- 2010-04-21
Frequently asked questions
- What is Mason Long's NPI number?
- Mason Long's National Provider Identifier (NPI) is 1790854537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mason Long's specialty?
- Mason Long is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mason Long located?
- Mason Long's practice location on file with NPPES is 301 Health Park Blvd Ste 325, Saint Augustine, FL 32086-5771.
- What is Mason Long's phone number?
- The practice phone number listed in the NPPES registry for Mason Long is (904) 824-6164.
- Does Mason Long accept Medicare?
- Mason Long is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mason Long's NPI active?
- Yes — Mason Long's NPI (1790854537) is active in the NPPES registry as of the last update on 2010-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.