John S Millar, M.D. is a healthcare provider in Sacramento, CA specialising in critical care (intensivists). John trained at Howard University College of Medicine, graduating in 1998. John is also listed as specialising in pulmonary disease and critical care medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Dr. Millar is a critical care (intensivists) in Sacramento, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CRITICAL CARE (INTENSIVISTS)”.
NPI registry
Dr. Millar is listed at 4150 V ST SUITE 3400, Sacramento, CA 95817. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (916) 734-3564. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Millar's National Provider Identifier is 1023092871. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Millar attended Howard University College of Medicine, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
Dr. Millar has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Millar the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Millar. If this is you, claiming it is free.
Guide.md
Source: NPPES NPI Registry
4150 V ST SUITE 3400
Sacramento, CA 95817
58 services · 31 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
42 |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
16 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Same specialty, same street address — most likely the same department or group.
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Same specialty, same city.
Other providers in the same specialty who trained at the same institution.
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.