Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. W STEPHEN BLACK-SCHAFFER MD
NPI 1841280492
Pathology - Anatomic Pathology & Clinical Pathology in Boston, MA

Q: What is W Black-schaffer's NPI number?

The NPI number for W Black-schaffer is 1841280492. It was assigned to this individual provider in the NPPES registry on October 25, 2005.

Q: What is W Black-schaffer's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

The NPPES record for W Black-schaffer was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since October 25, 2005PECOS Enrolled

55 FRUIT ST, WRN 219 PATHOLOGY ASSOCIATES, BOSTON, MA 02114(617) 724-1463(617) 726-3226 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Dr. W Stephen Black-schaffer Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. W STEPHEN BLACK-SCHAFFER MD (NPI 1841280492) is an individual anatomic pathology & clinical pathology provider in Boston, Massachusetts, licensed in Massachusetts (49664) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841280492

Entity TypeIndividualMale

Primary Taxonomy207ZP0102X

Provider Legal NameDR. W STEPHEN BLACK-SCHAFFERCredential: MD

Location Address55 FRUIT ST, WRN 219 PATHOLOGY ASSOCIATESBoston, MA 02114-2621

Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894

Phone(617) 724-1463

Fax(617) 726-3226

Sole ProprietorNo

Enumeration DateOctober 25, 2005

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1841280492 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

License✔ Licensed in MA · 49664

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Also ListedPathology · CytopathologyTaxonomy 207ZC0500X · License 49664 (MA)

55 FRUIT ST, Boston, MA 02114

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Other Identifiers 3

Medicaid2091518MA

Other049664MA · Tufts Health Plan

OtherJ01197MA · Bcbs Ma

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. W Stephen Black-schaffer Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Cell examination of specimen, selective cellular enhancement technique 88112

Cell examination of a specimen using selective cellular enhancement technique is a lab process that improves the visibility of certain cells in a sample. It helps in identifying abnormalities or diseases. The process is non-invasive, safe, and aids in accurate diagnosis.

336 services305 patients

Evaluation of fine needle aspirate with interpretation and report 88173

This procedure involves using a thin needle to collect a small sample from an abnormal area or lump. The sample is then examined under a microscope to identify any potential issues. A report of the findings is provided for further analysis.

154 services138 patients

Special stained specimen slides to examine tissue, each additional procedure 88341

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

97 services24 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

53 services50 patients

Evaluation of fine needle aspirate 88172

Evaluation of fine needle aspirate is a diagnostic procedure where a thin needle is used to collect cells from a lump or mass. This sample is then examined under a microscope to determine the nature of the lump, whether it's benign (non-cancerous) or malignant (cancerous).

37 services34 patients

Cell examination of specimen, concentration technique 88108

Cell examination of a specimen using a concentration technique is a lab process that enhances the detection of cells in a sample. This method helps to focus on key areas of the sample, making it easier to spot abnormalities or changes. It's a crucial part of diagnosing and monitoring certain health conditions.

34 services32 patients

Special stained specimen slides to examine tissue, initial procedure 88342

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

28 services26 patients

Screening cytopathology, cervical or vaginal (any reporting system), collected in preservative fluid, automated thin layer preparation, requiring interpretation by physician G0124

This is a routine health check where a sample of cells is collected from the lower region of the female reproductive system. The sample is preserved and prepared using automated technology for detailed examination. A doctor interprets the results to check for any abnormalities.

26 services26 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.

20 services13 patients

Surgical pathology consultation and report on referred slides prepared elsewhere 88321

A surgical pathology consultation involves reviewing slides prepared at a different lab to confirm or clarify a diagnosis. It's a second opinion to ensure accuracy. A report with findings and interpretations is then provided for your doctor's reference.

19 services19 patients

Pathology examination of tissue using a microscope, moderately high complexity 88307

A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.

14 services12 patients

Special stained specimen slides to identify organisms including interpretation and report 88312

This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.

13 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANDREW T CHAN M.D.

Internal Medicine (Gastroenterology)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 726-3212

KALOYAN S TANEV MD

Psychiatry & Neurology (Psychiatry)

55 FRUIT ST, WARREN 1220
BOSTON, MA 02114

Suffolk County (617) 726-7511

DAVID MICHAEL SHAHIAN MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)

55 FRUIT ST, MGH, BULFINCH 2
BOSTON, MA 02114

Suffolk County (617) 643-4335

DR. KATHLEEN BRIGID TRAINOR PSYD

Psychologist

55 FRUIT ST, YAW 6A MASSACHUSSETTS GENERAL HOSPITAL
BOSTON, MA 02114

Suffolk County (617) 724-6300

DR. FREDERIC DEBROS MD

Anesthesiology (Critical Care Medicine)

55 FRUIT ST, ANESTHESIA ASSOCIATES GRB 406E
BOSTON, MA 02114

Suffolk County (617) 724-7184

DR. MARGARET SETON MD

Internal Medicine (Rheumatology)

55 FRUIT ST, RHEUMATOLOGY ASSOCIATES YAW 2100
BOSTON, MA 02114

Suffolk County (617) 726-7938

DR. ZIV WILLIAMS MD

Neurological Surgery

55 FRUIT ST, MASSACHUSETTS GENERAL HOSPITAL, WAC 745K
BOSTON, MA 02114

Suffolk County (617) 643-4102

DR. ROBERT CLIFFORD SCHNEIDER MD

Anesthesiology

55 FRUIT ST, WHITE 525
BOSTON, MA 02114

Suffolk County (617) 724-3566

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is W Black-schaffer's NPI number?

The NPI number for W Black-schaffer is 1841280492. It was assigned to this individual provider in the NPPES registry on October 25, 2005.

Where is W Black-schaffer located?

W Black-schaffer practices at 55 Fruit St Wrn 219 Pathology Associates, Boston, MA 02114. The listed phone number is (617) 724-1463.

What is W Black-schaffer's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is W Black-schaffer enrolled in Medicare?

Yes. W Black-schaffer is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for W Black-schaffer was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.