Physician Profile
Unclaimed ProfileAbout GILBERT
John Gilbert, M.D. practises endocrinology in Fullerton, CA. John is a 1983 graduate of State University of New York Downstate Medical Center. John is also listed as specialising in internal medicine and endocrinology, diabetes & metabolism. Medicare claims data shows John provided 2,054 services to 1,317 patients.
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. Gilbert specialise in?
Dr. Gilbert is an endocrinology in Fullerton, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ENDOCRINOLOGY”.
NPI registry
Where is Dr. Gilbert located?
Dr. Gilbert is listed at 100 E VALENCIA MESA DR SUITE 105, Fullerton, CA 92835. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Gilbert's phone number?
The number on file is (714) 446-5640. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Gilbert?
Dr. Gilbert's National Provider Identifier is 1588650667. 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. Gilbert go to medical school?
Dr. Gilbert attended State University of New York Downstate Medical Center, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Gilbert have?
Dr. Gilbert has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Gilbert do most often?
According to Medicare billing data, Dr. Gilbert performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as ultrasound scan of head and neck soft tissue; provides treatments such as continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Gilbert's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gilbert. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (714) 446-5640
- Email not available
Practice Locations
100 E VALENCIA MESA DR SUITE 105
Fullerton, CA 92835
Procedures Most Often Billed to Medicare
2,054 services · 1,317 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
74 |
| Ultrasound scan of head and neck soft tissue | Imaging | 76536 |
12 |
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | Treatment | 95251 |
113 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
948 |
| 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' | Billing code | G2211 |
696 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
61 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
40 |
| Telephone medical discussion with physician, 21-30 minutes | Office visit | 99443 |
28 |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
25 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
23 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other endocrinology specialists at this location 1
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 — 29 related providers in 4 groups
Other endocrinology specialists in Fullerton 5
Same specialty, same city.
Trained at State University of New York Downstate Medical Center 8
Other providers in the same specialty who trained at the same institution.
Class of 1983 at State University of New York Downstate Medical Center 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 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.