Chadwick Nachtman, M.D.
NPI 1598717688 · Family Medicine Physician · Dubuque, IA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chadwick Nachtman, M.D. is a Family Medicine Physician provider in Dubuque, IA (NPI 1598717688).
Provider details
- NPI number
- 1598717688
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 34112 (IA)
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
20 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
9,252 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 886 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 536 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 401 | $117 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 384 | $13 |
| Blood Creatinine Level82565 | 376 | $5 |
| Screening Mammography77067 | 299 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 143 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 785 | 197 |
| Omeprazole | 517 | 128 |
| Lisinopril | 499 | 128 |
| Levothyroxine Sodium | 481 | 97 |
| Furosemide | 411 | 80 |
| Potassium Chloride | 409 | 72 |
| Losartan Potassium | 342 | 85 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-17
- Last updated
- 2009-11-25
Frequently asked questions
- What is Chadwick Nachtman's NPI number?
- Chadwick Nachtman's National Provider Identifier (NPI) is 1598717688, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chadwick Nachtman's specialty?
- Chadwick Nachtman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chadwick Nachtman located?
- Chadwick Nachtman's practice location on file with NPPES is 1000 Langworthy St, Dubuque, IA 52001-7313.
- What is Chadwick Nachtman's phone number?
- The practice phone number listed in the NPPES registry for Chadwick Nachtman is (563) 584-3226.
- Does Chadwick Nachtman accept Medicare?
- Chadwick Nachtman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chadwick Nachtman's NPI active?
- Yes — Chadwick Nachtman's NPI (1598717688) is active in the NPPES registry as of the last update on 2009-11-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.