Physician Profile
Unclaimed ProfileAbout MARKUS
Based in Vallejo, CA, Neil L. Markus, DO is listed in the NPI registry under emergency medicine. Neil graduated from College of Osteo Med of the Pacific at Pomona in 1998. According to Medicare claims data, Neil cared for 50 Medicare patients across 52 services.
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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (707) 651-1000
- Email not available
Practice Locations
975 SERENO DR
Vallejo, CA 94589
Procedures Most Often Billed to Medicare
52 services · 50 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
40 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
12 |
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 emergency medicines at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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 — 22 related providers in 3 groups
Other emergency medicines in Vallejo 6
Same specialty, same city.
Trained at College of Osteo Med of the Pacific at Pomona 8
Other providers in the same specialty who trained at the same institution.
Class of 1998 at College of Osteo Med of the Pacific at Pomona 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Markus?
Dr. Markus is an emergency medicine in Vallejo, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
What is Dr. Markus's address?
Dr. Markus is listed at 975 SERENO DR, Vallejo, CA 94589. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Markus?
The number on file is (707) 651-1000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Markus's NPI number?
Dr. Markus's National Provider Identifier is 1124106950. 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. Markus train?
Dr. Markus attended College of Osteo Med of the Pacific at Pomona, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Markus been practicing?
Dr. Markus has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Markus perform?
According to Medicare billing data, Dr. Markus 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
Has Dr. Markus confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Markus. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.