John Clark Alves, MD
NPI 1770003220 · Internal Medicine Physician · Guntersville, AL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Clark Alves, MD is a Internal Medicine Physician provider in Guntersville, AL (NPI 1770003220).
Provider details
- NPI number
- 1770003220
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD37591 (AL)
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
9 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
354 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 277 | $159 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 77 | $110 |
Typical Medicare-allowed amounts for these services range $110–$159 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 46 | 46 |
| Prednisone | 33 | 32 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 32 | 32 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 27 | 27 |
| Azithromycin | 20 | 20 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 18 | 18 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-06-26
- Last updated
- 2021-03-29
- Certified
- 2021-03-29
Frequently asked questions
- What is John Clark Alves's NPI number?
- John Clark Alves's National Provider Identifier (NPI) is 1770003220, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Clark Alves's specialty?
- John Clark Alves is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Clark Alves located?
- John Clark Alves's practice location on file with NPPES is 8000 Al Highway 69, Guntersville, AL 35976-7140.
- What is John Clark Alves's phone number?
- The practice phone number listed in the NPPES registry for John Clark Alves is (256) 571-8000.
- Does John Clark Alves accept Medicare?
- John Clark Alves is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Clark Alves's NPI active?
- Yes — John Clark Alves's NPI (1770003220) is active in the NPPES registry as of the last update on 2021-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.