Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ALLISON SHANNON LANKFORD M.D.
NPI 1639434087
Obstetrics & Gynecology - Maternal & Fetal Medicine in Baltimore, MD

Active since July 11, 2012PECOS EnrolledAccepts Medicare Assignment
22 S GREENE ST, BALTIMORE, MD 21201(240) 405-5578 Get Directions Write a Review

NPPES record last updated: October 5, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 5, 2026, Oct 13, 2021, Jul 7, 2020 and 2 more (5 updates tracked since 2018).

About Dr. Allison Shannon Lankford M.d. NPPES

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

DR. ALLISON SHANNON LANKFORD M.D. (NPI 1639434087) is an individual maternal & fetal medicine provider in Baltimore, Maryland, licensed in Maryland (D0083048) and active in the NPI registry since July 2012. She is enrolled in Medicare PECOS, is affiliated with University Of Maryland Medical Center, and maintains a secondary practice location in Glen Burnie.

NPPES Registry Identity

NPI1639434087
Entity TypeIndividualFemale
Primary Taxonomy207VM0101X
Provider Legal NameDR. ALLISON SHANNON LANKFORDCredential: M.D.
Location Address22 S GREENE STBaltimore, MD 21201-1544
Mailing Address250 W Pratt St, Ste 880Baltimore, MD 21201-6829
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateJuly 11, 2012
Last NPPES UpdateOctober 5, 20265 updates tracked since enumeration
NPPES CertifiedOctober 5, 2026
✔ NPI 1639434087 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in MD · D0083048
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License D83048 (MD)
Also ListedObstetrics & Gynecology · Critical Care MedicineTaxonomy 207VC0200X · License D0083048 (MD)
22 S GREENE ST, Baltimore, MD 21201

Other Names 1

Former Name (1)Dr. Allison Marie Shannon

Secondary Practice Location 1

Location 1301 Hospital DrGlen Burnie, MD 21061 · Phone (410) 553-8360 · Fax (410) 553-8359

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Allison Shannon Lankford M.d. 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 ID9739473000
PECOS Enrollment IDI20170831002247
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.

Medicare Billing Reassignments

4

Medicare enrollment records show Allison Lankford reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Emergency Care
22 S GREENE ST
Baltimore, MD 21201
  • Reassigned Medicare billing, Maryland enrollment
  • Medicare enrollment name: Shock Trauma Associates PA
  • 541 clinicians in this Medicare group
Obstetrics & Gynecology
419 W REDWOOD ST, SUITE 500
Baltimore, MD 21201
  • Reassigned Medicare billing, Maryland enrollment
  • Medicare enrollment name: University Of Maryland Obstetrical And Gynecological Associates PA
  • 68 clinicians in this Medicare group
Family Medicine
821 N EUTAW ST
Baltimore, MD 21201
  • Reassigned Medicare billing, Maryland enrollment
  • 966 clinicians in this Medicare group
Hematology & Oncology
227 SAINT PAUL PLACE, 4TH FLOOR
Baltimore, MD 21202
  • Reassigned Medicare billing, Maryland enrollment
  • 423 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
288 services76 patients
Dialysis procedure including 1 evaluation 90945
Dialysis is a treatment that filters and purifies the blood when your kidneys can't do their job. The procedure involves circulating your blood through a machine that removes waste products. An evaluation is done beforehand to assess your health and determine the best approach for your treatment.
74 services18 patients

Hospital Affiliations CMS Care Compare

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

University Of Maryland Medical Center

Acute Care Hospitals · Baltimore, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210002
Location22 South Greene StreetBaltimore, MD 21201 · Baltimore City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21201 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
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
Most-billed visit code 99213
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.

Internal Medicine
22 S GREENE ST
BALTIMORE, MD 21201
Student in an Organized Health Care Education/Training Program
22 S GREENE ST, MEDICINE, N3E09
BALTIMORE, MD 21201
Physician Assistant (Medical)
22 S GREENE ST, G2K36
BALTIMORE, MD 21201
Pediatrics (Adolescent Medicine)
22 S GREENE ST
BALTIMORE, MD 21201
Nurse Practitioner (Acute Care)
22 S GREENE ST, SUITE S4D07
BALTIMORE, MD 21201
Student in an Organized Health Care Education/Training Program
22 S GREENE ST, N3E09
BALTIMORE, MD 21201
Internal Medicine
22 S GREENE ST
BALTIMORE, MD 21201
Internal Medicine
22 S GREENE ST, N3E09
BALTIMORE, MD 21201

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 Allison Lankford's NPI number?

The NPI number for Allison Lankford is 1639434087. It was assigned to this individual provider in the NPPES registry on July 11, 2012. The provider is also known as Dr. Allison Marie Shannon.

Where is Allison Lankford located?

Allison Lankford practices at 22 S Greene St, Baltimore, MD 21201. The listed phone number is (240) 405-5578.

What is Allison Lankford's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Allison Lankford enrolled in Medicare?

Yes. Allison Lankford 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.

Which organizations bill Medicare for Allison Lankford's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Allison Lankford reassigns Medicare benefits to 4 organizations: Shock Trauma Associates, P.A. (Baltimore, MD), University Of MD Obstetrical And Gynecological Asso. PA (Baltimore, MD), University Of Maryland Community Medical Group, Inc. (Baltimore, MD) and St Paul Place Specialists, Inc. (Baltimore, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Allison Lankford's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Allison Lankford affiliated with any hospitals?

According to CMS data, Allison Lankford is affiliated with University Of Maryland Medical Center.

When was this NPI record last updated?

The NPPES record for Allison Lankford was last updated on October 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.