Physician Profile
John D Pfeifer, MD
Unclaimed ProfileAbout Dr. Pfeifer
John D Pfeifer, MD practices pathology in Saint Louis, MO. John is a 1988 graduate of University of California, San Diego School of Medicine. According to Medicare claims data, John cared for 602 Medicare patients across 1,234 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
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (314) 362-5641
- Email not available
Practice Locations
1 BARNES JEWISH HOSPITAL PLZ DIV PA ANATOMIC AND MOLECULAR PATH
Saint Louis, MO 63110
Procedures Most Often Billed to Medicare
1,234 services · 602 patients · 9 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Special stained specimen slides to examine tissue, each additional procedure | Lab test | 88341 |
331 |
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
250 |
| Special stained specimen slides to examine tissue, initial procedure | Lab test | 88342 |
146 |
| Microscopic genetic analysis of tumor, manual | Lab test | 88360 |
145 |
| Pathology examination of tissue using a microscope, moderately high complexity | Lab test | 88307 |
145 |
| Pathology examination of specimen during surgery, first tissue block | Lab test | 88331 |
98 |
| Pathology examination of tissue using a microscope, high complexity | Lab test | 88309 |
83 |
| Examination of archival tissue for genetic analysis | Lab test | 88363 |
25 |
| Pathology examination of tissue using a microscope, moderately low complexity | Lab test | 88304 |
11 |
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.
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.
Other pathology specialists in Saint Louis 8
Same specialty, same city.
Trained at University of California, San Diego School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1988 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Pfeifer specialize in?
Dr. Pfeifer is a pathology in Saint Louis, MO. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “PATHOLOGY”.
NPI registry
Where is Dr. Pfeifer located?
Dr. Pfeifer is listed at 1 BARNES JEWISH HOSPITAL PLZ DIV PA ANATOMIC AND MOLECULAR PATH, Saint Louis, MO 63110. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Pfeifer's phone number?
The number on file is (314) 362-5641. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Pfeifer's NPI number?
Dr. Pfeifer's National Provider Identifier is 1306864822. 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. Pfeifer go to medical school?
Dr. Pfeifer attended University of California, San Diego School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Pfeifer been practicing?
Dr. Pfeifer has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Pfeifer do most often?
According to Medicare billing data, Dr. Pfeifer the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Pfeifer confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Pfeifer. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.