Mark Nathanson, D.O.
NPI 1811998289 · Family Medicine Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Nathanson, D.O. is a Family Medicine Physician provider in Aurora, CO (NPI 1811998289).
Provider details
- NPI number
- 1811998289
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- License
- 32517 (CO)
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
840 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 | 259 | $125 |
| 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'SG2211 | 168 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 82 | $89 |
| Automated Urinalysis Test81003 | 68 | $2 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 65 | $129 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 245 | 75 |
| Levothyroxine Sodium | 154 | 40 |
| Losartan Potassium | 115 | 34 |
| Amlodipine Besylate | 104 | 36 |
| Metformin Hcl | 94 | 30 |
| Rosuvastatin Calcium | 90 | 35 |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Nathanson's NPI number?
- Mark Nathanson's National Provider Identifier (NPI) is 1811998289, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Nathanson's specialty?
- Mark Nathanson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Nathanson located?
- Mark Nathanson's practice location on file with NPPES is 1550 S Potomac St, Aurora, CO 80012-5455.
- What is Mark Nathanson's phone number?
- The practice phone number listed in the NPPES registry for Mark Nathanson is (303) 369-1080.
- Does Mark Nathanson accept Medicare?
- Mark Nathanson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Nathanson's NPI active?
- Yes — Mark Nathanson's NPI (1811998289) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.