Nathan Summers, M.D.
NPI 1649512468 · Infectious Disease Physician · Memphis, TN
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Summers, M.D. is a Infectious Disease Physician provider in Memphis, TN (NPI 1649512468).
Provider details
- NPI number
- 1649512468
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 59040 (TN)
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
13 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
236 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 | 115 | $88 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 52 | $107 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 37 | $71 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 32 | $157 |
Typical Medicare-allowed amounts for these services range $71–$157 (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 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 312 | 44 |
| Atorvastatin Calcium | 148 | 50 |
| Amlodipine Besylate | 143 | 50 |
| Elviteg/Cob/Emtri/Tenof Alafenbrand: Genvoya | 126 | 19 |
| Abacavir/Dolutegravir/Lamivudibrand: Triumeq | 119 | 16 |
| Dolutegravir/Rilpivirinebrand: Juluca | 117 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$57 across 2 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
- 2013-03-19
- Last updated
- 2019-06-03
Frequently asked questions
- What is Nathan Summers's NPI number?
- Nathan Summers's National Provider Identifier (NPI) is 1649512468, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Summers's specialty?
- Nathan Summers is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Summers located?
- Nathan Summers's practice location on file with NPPES is 880 Madison Ave, Memphis, TN 38103-3409.
- What is Nathan Summers's phone number?
- The practice phone number listed in the NPPES registry for Nathan Summers is (901) 545-6969.
- Does Nathan Summers accept Medicare?
- Nathan Summers is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Summers's NPI active?
- Yes — Nathan Summers's NPI (1649512468) is active in the NPPES registry as of the last update on 2019-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.