Physician Profile
Unclaimed ProfileAbout TAN
Based in La Palma, CA, Kwan Toh Tan, M.D. is listed in the NPI registry under internal medicine. Kwan graduated from Oral Roberts University School of Medicine in 1990. According to Medicare claims data, Kwan cared for 739 Medicare patients across 1,164 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
Common questions
What does Dr. Tan specialize in?
Dr. Tan is an internal medicine in La Palma, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Tan located?
Dr. Tan is listed at 7872 WALKER ST, La Palma, CA 90623. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Tan's phone number?
The number on file is (714) 527-8777. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Tan's NPI number?
Dr. Tan's National Provider Identifier is 1013099746. 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. Tan go to medical school?
Dr. Tan attended Oral Roberts University School of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Tan been practicing?
Dr. Tan has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Tan do most often?
According to Medicare billing data, Dr. Tan performs imaging including x-ray of chest, 2 views; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Tan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Tan. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (714) 527-8777
- Email not available
Practice Locations
7872 WALKER ST
La Palma, CA 90623
Procedures Most Often Billed to Medicare
1,164 services · 739 patients · 11 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| X-ray of chest, 2 views | Imaging | 71046 |
17 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
44 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
23 |
| Influenza vaccine, inactivated | Treatment | 90653 |
15 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
464 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
285 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
128 |
| Urinalysis, manual test | Lab test | 81002 |
102 |
| Blood glucose (sugar) test performed by hand-held instrument | Lab test | 82962 |
44 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
25 |
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 internal medicines at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
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 internal medicines in La Palma 8
Same specialty, same city.
Trained at Oral Roberts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at Oral Roberts University School of Medicine 6
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 2 views 7
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.