Mladen Perak, MD
NPI 1114908779 · Internal Medicine Physician · Denver, CO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mladen Perak, MD is a Internal Medicine Physician provider in Denver, CO (NPI 1114908779).
Provider details
- NPI number
- 1114908779
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0430861 (KS)
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
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
16 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $88 |
Typical Medicare-allowed amounts for these services range $88–$88 (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 · 122 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 870 | 279 |
| Tamsulosin Hcl | 406 | 140 |
| Lisinopril | 395 | 122 |
| Amlodipine Besylate | 356 | 123 |
| Rosuvastatin Calcium | 312 | 106 |
| Levothyroxine Sodium | 310 | 96 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-10
- Last updated
- 2021-04-22
- Certified
- 2021-04-22
Frequently asked questions
- What is Mladen Perak's NPI number?
- Mladen Perak's National Provider Identifier (NPI) is 1114908779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mladen Perak's specialty?
- Mladen Perak is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mladen Perak located?
- Mladen Perak's practice location on file with NPPES is 10400 E Alameda Ave, Denver, CO 80247-5104.
- What is Mladen Perak's phone number?
- The practice phone number listed in the NPPES registry for Mladen Perak is (303) 338-4545.
- Does Mladen Perak accept Medicare?
- Mladen Perak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mladen Perak's NPI active?
- Yes — Mladen Perak's NPI (1114908779) is active in the NPPES registry as of the last update on 2021-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.