Lothar Mcmillian, M.D.
NPI 1588748891 · Family Medicine Physician · Laguna Niguel, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lothar Mcmillian, M.D. is a Family Medicine Physician provider in Laguna Niguel, CA (NPI 1588748891).
Provider details
- NPI number
- 1588748891
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A45238 (CA)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
392 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 | 244 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 95 | $98 |
| 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 | 21 | $17 |
| Administration of Influenza Virus VaccineG0008 | 17 | $35 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 15 | $68 |
Typical Medicare-allowed amounts for these services range $17–$138 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 | 541 | 151 |
| Levothyroxine Sodium | 410 | 106 |
| Lisinopril | 260 | 80 |
| Amlodipine Besylate | 219 | 67 |
| Losartan Potassium | 212 | 59 |
| Meloxicam | 208 | 61 |
| Metoprolol Succinate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 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
Additional practice locations (1)
- 32312 Camino CapistranoSan Juan Capistrano, CA 92675-4518Phone: (949) 489-9112
Registry dates
- Enumerated
- 2006-10-24
- Last updated
- 2026-02-19
- Certified
- 2026-02-19
Frequently asked questions
- What is Lothar Mcmillian's NPI number?
- Lothar Mcmillian's National Provider Identifier (NPI) is 1588748891, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lothar Mcmillian's specialty?
- Lothar Mcmillian is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lothar Mcmillian located?
- Lothar Mcmillian's practice location on file with NPPES is 30281 Golden Lantern, Laguna Niguel, CA 92677-5979.
- What is Lothar Mcmillian's phone number?
- The practice phone number listed in the NPPES registry for Lothar Mcmillian is (949) 495-7144.
- Does Lothar Mcmillian accept Medicare?
- Lothar Mcmillian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lothar Mcmillian's NPI active?
- Yes — Lothar Mcmillian's NPI (1588748891) is active in the NPPES registry as of the last update on 2026-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.