Zachary Richardson, MD
NPI 1437544863 · Internal Medicine Physician · Watertown, WI
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Richardson, MD is a Internal Medicine Physician provider in Watertown, WI (NPI 1437544863).
Provider details
- NPI number
- 1437544863
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125066444 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
833 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 259 | $107 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 229 | $72 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 186 | $105 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 108 | $156 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 28 | $118 |
| Critical Care, First 30-74 Minutes99291 | 23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 35 | 11 |
| Furosemide | 32 | 12 |
| Cefdinir | 30 | 28 |
| Prednisone | 26 | 24 |
| Spironolactone | 23 | — |
| Azithromycin | 22 | 20 |
| Pantoprazole Sodium | 21 | 17 |
Practice location
Mailing address
Additional practice locations (1)
- 2160 S 1st AveMaywood, IL 60153-3328Phone: (708) 216-5620
Registry dates
- Enumerated
- 2015-04-02
- Last updated
- 2018-07-25
Frequently asked questions
- What is Zachary Richardson's NPI number?
- Zachary Richardson's National Provider Identifier (NPI) is 1437544863, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Richardson's specialty?
- Zachary Richardson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Richardson located?
- Zachary Richardson's practice location on file with NPPES is 125 Hospital Dr, Watertown, WI 53098.
- What is Zachary Richardson's phone number?
- The practice phone number listed in the NPPES registry for Zachary Richardson is (920) 245-5741.
- Does Zachary Richardson accept Medicare?
- Zachary Richardson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Richardson's NPI active?
- Yes — Zachary Richardson's NPI (1437544863) is active in the NPPES registry as of the last update on 2018-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.