DR. MARY-MARGARET LANGSTON ALLEN MD
NPI 1699118257
Pathology - Anatomic Pathology & Clinical Pathology in Nashville, TN

Q: What is Mary-margaret Allen's NPI number?

The NPI number for Mary-margaret Allen is 1699118257. It was assigned to this individual provider in the NPPES registry on April 14, 2013.

Q: What is Mary-margaret Allen's specialty?

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

Active since April 14, 2013PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

2000 CHURCH ST, NASHVILLE, TN 37236(615) 284-7950(615) 284-5750 Get Directions Write a Review

NPPES record last updated: September 22, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 18, 2021, Jun 5, 2019 (2 updates tracked since 2019).

On this page

About Dr. Mary-margaret Langston Allen Md NPPES

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

DR. MARY-MARGARET LANGSTON ALLEN MD (NPI 1699118257) is an individual anatomic pathology & clinical pathology provider in Nashville, Tennessee, licensed in Florida (ME130875) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS, is affiliated with Saint Thomas Rutherford Hospital, and is a graduate of Florida State University College Of Medicine (2013).

NPPES Registry Identity

NPI1699118257

Entity TypeIndividualFemale

Primary Taxonomy207ZP0102X

Provider Legal NameDR. MARY-MARGARET LANGSTON ALLENCredential: MD

Location Address2000 CHURCH STNashville, TN 37236-5848

Mailing Address2004 Hayes St # Ll30Nashville, TN 37203-2646 · (629) 203-7775 · Fax (625) 284-5750

Phone(615) 284-7950

Fax(615) 284-5750

Sole ProprietorNo

Medical School CMSFlorida State University College Of MedicineGraduated 2013

Enumeration DateApril 14, 2013

Last NPPES UpdateSeptember 22, 20252 updates tracked since enumeration

NPPES CertifiedSeptember 22, 2025

✔ NPI 1699118257 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

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

Taxonomy Code207ZP0102X

License✔ Licensed in FL · ME130875

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.

2000 CHURCH ST, Nashville, TN 37236

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mary-margaret Langston Allen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6608206719

PECOS Enrollment IDI20200413002826

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 15

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.

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.

237 services39 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.

212 services42 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.

210 services112 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.

87 services58 patients

Flow cytometry technique for dna or cell analysis, 16 or more markers 88189

Flow cytometry is a method used to measure and analyze cells. It uses a beam of light to detect up to 16 or more markers on cells, helping to identify their type, function, or abnormalities. This technique aids in diagnosing various health conditions.

66 services61 patients

Preparation of tissue for examination by removing any calcium present 88311

This procedure involves treating tissue samples to remove any calcium, which can interfere with the examination. The tissue is soaked in a special solution that safely dissolves the calcium, leaving the tissue intact for accurate analysis. This helps in making precise diagnoses.

45 services44 patients

Blood smear interpretation by physician with written report 85060

Blood smear interpretation is a lab test where your doctor examines a sample of your blood under a microscope. They look for abnormalities in your blood cells which can help diagnose various conditions. You'll receive a written report of the findings.

40 services39 patients

Bone marrow, smear interpretation 85097

Bone marrow smear interpretation is a procedure where a small sample of your bone marrow is taken and examined under a microscope. This helps doctors identify any abnormal cells or signs of diseases such as anemia, leukemia, or infections. It's a crucial step in diagnosing various blood disorders.

40 services39 patients

Microscopic genetic analysis of tumor, manual 88360

Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.

34 services25 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.

30 services15 patients

Genetic sequencing localization, initial procedure 88365

Genetic sequencing localization is a process to identify where specific genes are located in your DNA. During the initial procedure, a sample of your cells is collected, usually through a simple swab or blood test. This data is then analyzed to pinpoint the location of certain genes. This can help understand your genetic makeup and potential health risks.

22 services16 patients

Flow cytometry technique for dna or cell analysis, 9 to 15 markers 88188

Flow cytometry is a technique used to measure physical and chemical characteristics of cells or particles. It can analyze multiple markers (9 to 15) on a cell, helping to identify its type and function. This process can also examine DNA within cells for any abnormalities.

19 services18 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

17 services15 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.

16 services14 patients

Genetic sequencing localization, each additional procedure 88364

Genetic sequencing localization is a process where specific regions of your DNA are identified and studied. If you're having additional procedures, it simply means that more areas of your DNA are being examined. This helps to understand your genetic makeup better and can assist in identifying potential health risks.

15 services12 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Saint Thomas Rutherford Hospital

Acute Care Hospitals · Murfreesboro, TN

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number440053

Location1700 Medical Center ParkwayMurfreesboro, TN 37129 · Rutherford County

Emergency services Birthing friendly

Ascension Saint Thomas Hospital

Acute Care Hospitals · Nashville, TN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440082

Location4220 Harding Rd, PO Box 380Nashville, TN 37205 · Davidson County

Emergency services Birthing friendly

Saint Thomas Highlands Hospital

Acute Care Hospitals · Sparta, TN

OwnershipProprietary

CMS Certification Number440192

Location401 Sewell DrSparta, TN 38583 · White County

Emergency services

Saint Thomas Hospital For Spinal Surgery

Acute Care Hospitals · Nashville, TN

OwnershipVoluntary non-profit - Other

CMS Certification Number440218

Location2011 Murphy AvenueNashville, TN 37203 · Davidson County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37236 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

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

100

Improvement Activities

Leave this field empty

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.

MRS. ANDREA CRAWFORD RD

Dietitian, Registered

2000 CHURCH ST
NASHVILLE, TN 37236

Davidson County (615) 284-5555

DR. LINDSEY DENNEY

Emergency Medicine

2000 CHURCH ST
NASHVILLE, TN 37236

Davidson County (423) 433-7127

ANDREW W BOYD

Student in an Organized Health Care Education/Training Program

2000 CHURCH ST
NASHVILLE, TN 37236

Davidson County (615) 284-5555

CELENA MARSHALL PHARMD

Pharmacist

2000 CHURCH ST
NASHVILLE, TN 37236

Davidson County (615) 284-5235

EMMANUEL JOHNBOSCO MAMAH MD

Student in an Organized Health Care Education/Training Program

2000 CHURCH ST
NASHVILLE, TN 37236

Davidson County (615) 284-5555

KIRSTEN AGOSTINELLI DIAZ

Registered Nurse

2000 CHURCH ST
NASHVILLE, TN 37236

Davidson County (615) 284-5555

DR. THOMAS CLAYTON WHITWORTH MD

Pediatrics (Neonatal-Perinatal Medicine)

2000 CHURCH ST, SUITE #326 BAPTIST HOSPITAL
NASHVILLE, TN 37236

Davidson County (615) 284-5071

DR. JAMES SKYLAR DEAN II MD

Emergency Medicine

2000 CHURCH ST
NASHVILLE, TN 37236

Davidson County (937) 238-1065

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 Mary-margaret Allen's NPI number?

The NPI number for Mary-margaret Allen is 1699118257. It was assigned to this individual provider in the NPPES registry on April 14, 2013.

Where is Mary-margaret Allen located?

Mary-margaret Allen practices at 2000 Church St, Nashville, TN 37236. The listed phone number is (615) 284-7950.

What is Mary-margaret Allen's specialty?

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

Is Mary-margaret Allen enrolled in Medicare?

Yes. Mary-margaret Allen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Mary-margaret Allen accept?

Health plans from Oscar Insurance Company list Mary-margaret Allen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mary-margaret Allen affiliated with any hospitals?

According to CMS data, Mary-margaret Allen is affiliated with Saint Thomas Rutherford Hospital, Ascension Saint Thomas Hospital, Saint Thomas Highlands Hospital and Saint Thomas Hospital For Spinal Surgery.

When was this NPI record last updated?

The NPPES record for Mary-margaret Allen was last updated on September 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.