Timothy Mulder, M.D.
NPI 1336131747 · Family Medicine Physician · Willmar, MN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Mulder, M.D. is a Family Medicine Physician provider in Willmar, MN (NPI 1336131747).
Provider details
- NPI number
- 1336131747
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 40320 (MN)
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
1,850 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 | 334 | $124 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 237 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 157 | $88 |
| Blood Test, Clotting Time85610 | 139 | $4 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 87 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 85 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 335 | 88 |
| Atorvastatin Calcium | 313 | 78 |
| Simvastatin | 293 | 67 |
| Amlodipine Besylate | 242 | 63 |
| Losartan Potassium | 198 | 59 |
| Tamsulosin Hcl | 179 | 51 |
| Omeprazole | 176 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-22
- Last updated
- 2014-01-22
Frequently asked questions
- What is Timothy Mulder's NPI number?
- Timothy Mulder's National Provider Identifier (NPI) is 1336131747, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Mulder's specialty?
- Timothy Mulder is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Mulder located?
- Timothy Mulder's practice location on file with NPPES is 502 2nd St Sw Ste 1, Willmar, MN 56201-3365.
- What is Timothy Mulder's phone number?
- The practice phone number listed in the NPPES registry for Timothy Mulder is (320) 235-7232.
- Does Timothy Mulder accept Medicare?
- Timothy Mulder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Mulder's NPI active?
- Yes — Timothy Mulder's NPI (1336131747) is active in the NPPES registry as of the last update on 2014-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.