Alexander Chester, M.D.
NPI 1518989821 · Internal Medicine Physician · Washington, DC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Chester, M.D. is a Internal Medicine Physician provider in Washington, DC (NPI 1518989821).
Provider details
- NPI number
- 1518989821
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD8990 (DC)
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
3,518 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 385 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 345 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 317 | $8 |
| Measurement C-Reactive Protein for Detection of Infection Or Inflammation86140 | 274 | $5 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 272 | $3 |
| Red Blood Cell Sedimentation Rate, to Detect Inflammation, Automated85652 | 266 | $3 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 223 | 65 |
| Atorvastatin Calcium | 188 | 54 |
| Amlodipine Besylate | 118 | 32 |
| Lorazepam | 114 | 22 |
| Losartan Potassium | 95 | 27 |
| Levothyroxine Sodium | 91 | 28 |
| Zolpidem Tartrate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 across 1 record (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
- 2006-07-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is Alexander Chester's NPI number?
- Alexander Chester's National Provider Identifier (NPI) is 1518989821, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Chester's specialty?
- Alexander Chester is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Chester located?
- Alexander Chester's practice location on file with NPPES is 3301 New Mexico Ave Nw, Washington, DC 20016-3622.
- What is Alexander Chester's phone number?
- The practice phone number listed in the NPPES registry for Alexander Chester is (202) 362-4467.
- Does Alexander Chester accept Medicare?
- Alexander Chester is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Chester's NPI active?
- Yes — Alexander Chester's NPI (1518989821) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.