Michael O'Brien, MD
NPI 1598907453 · Family Medicine Physician · Reno, NV
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael O'Brien, MD is a Family Medicine Physician provider in Reno, NV (NPI 1598907453).
Provider details
- NPI number
- 1598907453
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 14263 (NV)
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
17 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
1,735 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 | 592 | $125 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 237 | $72 |
| Advance Care Planning, First 30 Minutes99497 | 153 | $80 |
| 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 | 144 | $16 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 140 | $18 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 147 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 629 | 181 |
| Levothyroxine Sodium | 290 | 75 |
| Amlodipine Besylate | 208 | 58 |
| Lisinopril | 203 | 56 |
| Losartan Potassium | 201 | 63 |
| Losartan/Hydrochlorothiazidebrand: Losartan-Hydrochlorothiazide | 187 | 48 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,012 across 168 records (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
- 2009-03-24
- Last updated
- 2018-05-08
Frequently asked questions
- What is Michael O'Brien's NPI number?
- Michael O'Brien's National Provider Identifier (NPI) is 1598907453, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael O'Brien's specialty?
- Michael O'Brien is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael O'Brien located?
- Michael O'Brien's practice location on file with NPPES is 5575 Kietzke Ln, Reno, NV 89511-2290.
- What is Michael O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Michael O'Brien is (775) 851-1505.
- Does Michael O'Brien accept Medicare?
- Michael O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael O'Brien's NPI active?
- Yes — Michael O'Brien's NPI (1598907453) is active in the NPPES registry as of the last update on 2018-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.