Mark Adorjan, MD
NPI 1164430732 · Family Medicine Physician · Appleton, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Adorjan, MD is a Family Medicine Physician provider in Appleton, WI (NPI 1164430732).
Provider details
- NPI number
- 1164430732
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 45080 (WI)
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
627 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 114 | $120 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 81 | $9 |
| Administration and Interpretation of Patient-Focused Health Risk Assessment96160 | 61 | $3 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 51 | $85 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 46 | $6 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
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 |
|---|---|---|
| Atorvastatin Calcium | 223 | 61 |
| Amlodipine Besylate | 113 | 32 |
| Lisinopril | 110 | 31 |
| Hydrochlorothiazide | 81 | 23 |
| Metoprolol Succinate | 79 | 23 |
| Losartan Potassium | 64 | 18 |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 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
- 2006-08-03
- Last updated
- 2023-03-07
Frequently asked questions
- What is Mark Adorjan's NPI number?
- Mark Adorjan's National Provider Identifier (NPI) is 1164430732, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Adorjan's specialty?
- Mark Adorjan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Adorjan located?
- Mark Adorjan's practice location on file with NPPES is W3124 Van Roy Rd, Appleton, WI 54915-3982.
- What is Mark Adorjan's phone number?
- The practice phone number listed in the NPPES registry for Mark Adorjan is (920) 730-2747.
- Does Mark Adorjan accept Medicare?
- Mark Adorjan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Adorjan's NPI active?
- Yes — Mark Adorjan's NPI (1164430732) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.