Physician Profile
Unclaimed ProfileAbout ELLISON
John Masou Ellison, M.D. is a healthcare provider in Monterey, CA specialising in emergency medicine. John trained at University of California, San Diego School of Medicine, graduating in 1990.
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. Ellison specialise in?
Dr. Ellison is an emergency medicine in Monterey, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
Where is Dr. Ellison located?
Dr. Ellison is listed at 23625 WR HOLMAN HIGHWAY, Monterey, CA 93940. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Ellison's phone number?
The number on file is (831) 624-5311. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Ellison?
Dr. Ellison's National Provider Identifier is 1093845943. 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. Ellison go to medical school?
Dr. Ellison attended University of California, San Diego School of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Ellison have?
Dr. Ellison has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Ellison do most often?
According to Medicare billing data, Dr. Ellison provides treatments such as electrocardiogram 1 to 3 leads with review by physician only and routine electrocardiogram using at least 12 leads with interpretation and report only, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Ellison's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ellison. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (831) 624-5311
- Email not available
Practice Locations
23625 WR HOLMAN HIGHWAY
Monterey, CA 93940
Procedures Most Often Billed to Medicare
789 services · 765 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Electrocardiogram (ecg) 1 to 3 leads with review by physician only | Treatment | 93042 |
231 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
23 |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
379 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
126 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
30 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated 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 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
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 — 32 related providers in 4 groups
Other emergency medicines in Monterey 8
Same specialty, same city.
Trained at University of California, San Diego School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Electrocardiogram (ecg) 1 to 3 leads with review by physician only 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.