Doctor profile · Federal record
Dr. Ann Tan, M.D.
Anatomic Pathology & Clinical Pathology Physician (CMS: Pathology) · Los Angeles, CA
- NPI 1093976938
- Accepts Medicare
- MIPS 98.4 / 100 · 2023
- 18 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1200 N State St, Los Angeles County Medical Center, Gh Room 2900
Los Angeles, CA 900331029
(323) 226-7149 - Mailing address
-
2895 Shakespeare Dr
San Marino, CA 911082230
Credentials & registration
- NPI registered
- June 2008 — 18 yrs on file
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207ZP0102X — NUCC code
- State license (1)
- California #A95082
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1093976938. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,373
Distinct HCPCS
10
Medicare allowed
$51,581
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 642 | 279 | $40 | |
88331 |
Pathology examination of specimen during surgery, first tissue block | 168 | 49 | $66 | |
88311 |
Preparation of tissue for examination by removing any calcium present | 125 | 98 | $13 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 97 | 94 | $37 | |
88341 |
Special stained specimen slides to examine tissue, each additional procedure | 75 | 19 | $30 | |
88304 |
Pathology examination of tissue using a microscope, moderately low complexity | 69 | 54 | $12 | |
89060 |
Crystal identification from tissue or body fluid | 49 | 41 | $19 | |
85060 |
Blood smear interpretation by physician with written report | 44 | 42 | $26 | |
88307 |
Pathology examination of tissue using a microscope, moderately high complexity | 38 | 28 | $88 | |
88112 |
Cell examination of specimen, selective cellular enhancement technique | 35 | 31 | $29 |
In context: peer comparison
Among 54 peers in Los Angeles Anatomic Pathology & Clinical Pathology Physician, average services per provider: 159. This provider delivers 8.6× the peer median.Open Payments
Industry payments received
All-time total
$21
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merck Sharp & Dohme LLC | 1 | $21.45 |
By nature of payment
Frequently asked questions
What is Dr. Ann Tan's medical specialty?
Dr. Ann Tan practices Anatomic Pathology & Clinical Pathology Physician in Los Angeles, CA.
Where does Dr. Ann Tan practice?
Dr. Ann Tan practices at 1200 N State St, Los Angeles, CA 900331029. Office phone: 3232267149.
What is Dr. Ann Tan's NPI?
Dr. Ann Tan's National Provider Identifier (NPI) is 1093976938, issued by NPPES.
Does Dr. Ann Tan accept Medicare assignment?
Yes. Dr. Ann Tan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ann Tan commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Pathology examination of specimen during surgery, first tissue block (HCPCS 88331); Preparation of tissue for examination by removing any calcium present (HCPCS 88311). Source: CMS Medicare Physician & Other Practitioners file.