Doctor profile · Federal record
Dr. Karen Warschaw, M.D.
Dermatopathology Physician (CMS: Dermatology) · Scottsdale, AZ
- NPI 1538142625
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 41 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9060 E Via Linda, Suite 150
Scottsdale, AZ 852585417
(480) 275-2494
fax (480) 772-4296
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- January 7, 2015
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207ND0900X — NUCC code
- State license (1)
- Arizona #28895
- Medicaid
- AZ #554510
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538142625. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
8,409
Distinct HCPCS
9
Medicare allowed
$606,144
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 6,974 | 4,287 | $68 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 609 | 490 | $96 | |
88341 |
Special stained specimen slides to examine tissue, each additional procedure | 372 | 273 | $84 | |
88312 |
Special stained specimen slides to identify organisms including interpretation and report | 164 | 141 | $107 | |
88304 |
Pathology examination of tissue using a microscope, moderately low complexity | 141 | 139 | $41 | |
88350 |
Antibody evaluation, each additional single antibody stain procedure | 88 | 22 | $112 | |
88313 |
Special stained specimen slides to examine tissue including interpretation and report | 22 | 18 | $79 | |
88346 |
Antibody evaluation, initial single antibody stain procedure | 22 | 22 | $143 | |
88321 |
Surgical pathology consultation and report on referred slides prepared elsewhere | 17 | 17 | $94 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 738. This provider delivers 11× the peer median.Frequently asked questions
What is Dr. Karen Warschaw's medical specialty?
Dr. Karen Warschaw practices Dermatopathology Physician in Scottsdale, AZ.
Where does Dr. Karen Warschaw practice?
Dr. Karen Warschaw practices at 9060 E Via Linda, Scottsdale, AZ 852585417. Office phone: 4802752494.
What is Dr. Karen Warschaw's NPI?
Dr. Karen Warschaw's National Provider Identifier (NPI) is 1538142625, issued by NPPES.
Does Dr. Karen Warschaw accept Medicare assignment?
Yes. Dr. Karen Warschaw accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Warschaw commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to examine tissue, initial procedure (HCPCS 88342); Special stained specimen slides to examine tissue, each additional procedure (HCPCS 88341). Source: CMS Medicare Physician & Other Practitioners file.