April Marquardt, MD
NPI 1235352311 · Rheumatology Physician · Ypsilanti, MI
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
April Marquardt, MD is a Rheumatology Physician provider in Ypsilanti, MI (NPI 1235352311).
Provider details
- NPI number
- 1235352311
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 35086828 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
19 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
402 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 350 | $123 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 27 | $98 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 25 | $159 |
Typical Medicare-allowed amounts for these services range $98–$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 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 626 | 184 |
| Hydroxychloroquine Sulfate | 513 | 148 |
| Prednisone | 418 | 143 |
| Adalimumabbrand: Humira(cf) Pen | 229 | 26 |
| Duloxetine Hcl | 181 | 44 |
| Leflunomide | 107 | 37 |
| Tramadol Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-10
- Last updated
- 2016-09-22
Frequently asked questions
- What is April Marquardt's NPI number?
- April Marquardt's National Provider Identifier (NPI) is 1235352311, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is April Marquardt's specialty?
- April Marquardt is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is April Marquardt located?
- April Marquardt's practice location on file with NPPES is 4990 W Clark Rd, Ypsilanti, MI 48197-1149.
- What is April Marquardt's phone number?
- The practice phone number listed in the NPPES registry for April Marquardt is (734) 593-5990.
- Does April Marquardt accept Medicare?
- April Marquardt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is April Marquardt's NPI active?
- Yes — April Marquardt's NPI (1235352311) is active in the NPPES registry as of the last update on 2016-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.