Physician Profile
Unclaimed ProfileAbout CHAI
Michael Chai, M.D. is a healthcare provider in Upland, CA specializing in internal medicine. Michael trained at Eastern Virginia Medical School, graduating in 1994. Medicare claims data shows Michael provided 2,037 services to 1,033 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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (909) 920-6698
- Email not available
Practice Locations
490 N MOUNTAIN AVE # B
Upland, CA 91786
Procedures Most Often Billed to Medicare
2,037 services · 1,033 patients · 16 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of impacted ear wax | Procedure | 69210 |
22 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
227 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
24 |
| Injection, methylprednisolone sodium succinate, 5 mg | Drug given | J2919 |
27 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
810 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
426 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
142 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
79 |
| Electrocardiogram, routine ecg with 12 leads; interpretation and report only, performed as a screening for the initial preventive physical examination | Billing code | G0405 |
67 |
| Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allo | Billing code | G0181 |
55 |
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 in Upland 8
Same specialty, same city.
Trained at Eastern Virginia Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1994 at Eastern Virginia Medical School 7
Providers who graduated from the same medical school in the same year.
More connections — 7 related providers in 1 group
Also performs Removal of impacted ear wax 7
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Chai?
Dr. Chai is an internal medicine in Upland, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Chai's address?
Dr. Chai is listed at 490 N MOUNTAIN AVE # B, Upland, CA 91786. 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. Chai?
The number on file is (909) 920-6698. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Chai?
Dr. Chai's National Provider Identifier is 1083748727. 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. Chai train?
Dr. Chai attended Eastern Virginia Medical School, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Chai have?
Dr. Chai has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chai perform?
According to Medicare billing data, Dr. Chai performs procedures including removal of impacted ear wax; provides treatments such as injection of drug or substance under skin or into muscle and routine electrocardiogram using at least 12 leads 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. Chai's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chai. 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.