Doctor profile · Federal record
Dr. John Zwiener, MD
Clinical Pathology/Laboratory Medicine Physician (CMS: Pathology) · Anatomic Pathology & Clinical Pathology Physician · Carlsbad, NM
- NPI 1518038496
- Accepts Medicare
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2430 W Pierce St
Carlsbad, NM 882203553
(648) 223-3070 - Mailing address
-
Po Box 49009
Greenwood, SC 296490001
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- June 11, 2025
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207ZP0105X — NUCC code
- State licenses (2)
- New Mexico #90 132 · New Mexico #90-132
- Medicaid (2)
- NM #00007807 · NM #0Y807
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1518038496. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
924
Distinct HCPCS
8
Medicare allowed
$29,377
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 597 | 308 | $35 | |
88312 |
Special stained specimen slides to identify organisms including interpretation and report | 186 | 110 | $25 | |
88304 |
Pathology examination of tissue using a microscope, moderately low complexity | 46 | 46 | $11 | |
88313 |
Special stained specimen slides to examine tissue including interpretation and report | 30 | 27 | $11 | |
88307 |
Pathology examination of tissue using a microscope, moderately high complexity | 21 | 17 | $77 | |
88331 |
Pathology examination of specimen during surgery, first tissue block | 16 | 13 | $57 | |
88311 |
Preparation of tissue for examination by removing any calcium present | 15 | 14 | $12 | |
88108 |
Cell examination of specimen, concentration technique | 13 | 13 | $21 |
In context: peer comparison
Among 1 peers in Carlsbad Clinical Pathology/Laboratory Medicine Physician, average services per provider: 115. This provider delivers 8.0× the peer median.Frequently asked questions
What is Dr. John Zwiener's medical specialty?
Dr. John Zwiener practices Clinical Pathology/Laboratory Medicine Physician in Carlsbad, NM.
Where does Dr. John Zwiener practice?
Dr. John Zwiener practices at 2430 W Pierce St, Carlsbad, NM 882203553. Office phone: 6482233070.
What is Dr. John Zwiener's NPI?
Dr. John Zwiener's National Provider Identifier (NPI) is 1518038496, issued by NPPES.
Does Dr. John Zwiener accept Medicare assignment?
Yes. Dr. John Zwiener accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Zwiener commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to identify organisms including interpretation and report (HCPCS 88312); Pathology examination of tissue using a microscope, moderately low complexity (HCPCS 88304). Source: CMS Medicare Physician & Other Practitioners file.