Physician Profile
Unclaimed ProfileAbout MACMILLAN
John Frederick Macmillan, MD is a healthcare provider in Sacramento, CA specialising in internal medicine. John is also listed as specialising in hospice & palliative medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Macmillan specialise in?
Dr. Macmillan is an internal medicine in Sacramento, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Macmillan located?
Dr. Macmillan is listed at 2315 STOCKTON BLVD MAIN HOSPITAL UNIVERSITY OF CALIFORNIA DAVIS HEALTH SYS, Sacramento, CA 95817. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Macmillan's phone number?
The number on file is (918) 734-7508. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Macmillan?
Dr. Macmillan's National Provider Identifier is 1568449015. 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
Where did Dr. Macmillan go to medical school?
Dr. Macmillan attended Other, graduating in 1995. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Macmillan have?
Dr. Macmillan has 31 years experience. Calculated from a graduation year of 1995, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Macmillan do most often?
According to Medicare billing data, Dr. Macmillan 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
Is Dr. Macmillan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Macmillan. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (918) 734-7508
- Email not available
Practice Locations
2315 STOCKTON BLVD MAIN HOSPITAL UNIVERSITY OF CALIFORNIA DAVIS HEALTH SYS
Sacramento, CA 95817
Procedures Most Often Billed to Medicare
356 services · 213 patients · 6 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 |
186 |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
44 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
43 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
38 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
25 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
20 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 24 related providers in 3 groups
Other internal medicines in Sacramento 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1995 at Other 8
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.