Physician Profile
Unclaimed ProfileAbout OH
Hee Yong Oh, M.D. is a healthcare provider in West Covina, CA specializing in internal medicine. Medicare claims data shows Hee provided 1,445 services to 377 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
- (626) 962-2421
- Email not available
Practice Locations
1433 W MERCED AVE STE 207
West Covina, CA 91790
Procedures Most Often Billed to Medicare
1,445 services · 377 patients · 14 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein (3 years or older) | Procedure | 36410 |
50 |
| Influenza vaccine, trivalent, 0.5 ml dosage | Treatment | 90658 |
20 |
| Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes | Office visit | 99458 |
336 |
| Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | Office visit | 99457 |
225 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
203 |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
148 |
| Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99439 |
141 |
| Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | Office visit | 99454 |
110 |
| Telephone medical discussion with physician, 21-30 minutes | Office visit | 99443 |
73 |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
49 |
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 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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 — 30 related providers in 4 groups
Other internal medicines in West Covina 6
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1968 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein (3 years or older) 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Oh?
Dr. Oh is an internal medicine in West Covina, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Oh's address?
Dr. Oh is listed at 1433 W MERCED AVE STE 207, West Covina, CA 91790. 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. Oh?
The number on file is (626) 962-2421. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Oh?
Dr. Oh's National Provider Identifier is 1225106693. 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. Oh train?
Dr. Oh attended Other, graduating in 1968. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Oh have?
Dr. Oh has 58 years experience. Calculated from a graduation year of 1968, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Oh perform?
According to Medicare billing data, Dr. Oh performs procedures including insertion of needle into vein; provides treatments such as influenza vaccine, trivalent, 0.5 ml dosage, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Oh's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Oh. 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.