1. Home
  2. Directory
  3. Maryland
  4. Baltimore
  5. Emergency Medicine
  6. NPI Profile

DIANE LYNN MCDONALD M.D.
NPI 1740222611
Emergency Medicine - Pediatric Emergency Medicine in Baltimore, MD

Active since June 12, 2006PECOS Enrolled
650 W LOMBARD ST, UNIVERSITY OF MARYLAND PEDIATRIC EMERGENCY DEPT, BALTIMORE, MD 21201(410) 328-6335(410) 328-0987 Get Directions Write a Review

NPPES record last updated: March 27, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Diane Lynn Mcdonald M.d. NPPES

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

DIANE LYNN MCDONALD M.D. (NPI 1740222611) is an individual pediatric emergency medicine provider in Baltimore, Maryland, licensed in Maryland (D0036878) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1740222611
Entity TypeIndividualFemale
Primary Taxonomy207PP0204X
Provider Legal NameDIANE LYNN MCDONALDCredential: M.D.
Location Address650 W LOMBARD ST, UNIVERSITY OF MARYLAND PEDIATRIC EMERGENCY DEPTBaltimore, MD 21201-1513
Mailing Address4701 Dower DrEllicott City, MD 21043-6453 · (410) 750-7743 · Fax (410) 750-7255
Phone(410) 328-6335
Fax(410) 328-0987
Sole ProprietorNo
Enumeration DateJune 12, 2006
Last NPPES UpdateMarch 27, 2026
NPPES CertifiedMarch 27, 2026
✔ NPI 1740222611 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency Medicine · Pediatric Emergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207PP0204X
License✔ Licensed in MD · D0036878
Definition
Pediatric Emergency Medicine is a clinical subspecialty that focuses on the care of the acutely ill or injured child in the setting of an emergency department.
Also ListedPediatricsTaxonomy 208000000X · License ME114640 (FL)
650 W LOMBARD ST, Baltimore, MD 21201
Open in Google Maps ↗

Other Identifiers 1

Medicaid286931400MD

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare, Cigna HealthCare of Florida, Inc., Florida Blue (BlueCross BlueShield FL) and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diane Lynn Mcdonald M.d. 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.

Medicare Billing Reassignments

2

Medicare enrollment records show Diane Mcdonald reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Collier Health Services Inc
928 mi
Federally Qualified Health Center (FQHC)
1454 MADISON AVE W
Immokalee, FL 34142
  • Reassigned Medicare billing, Florida enrollment
  • 79 clinicians in this Medicare group
NPI 1609827211 (239) 658-3064
Southwest Florida Emergency Management LLC
954 mi
Emergency Medicine
350 7TH ST N
Naples, FL 34102
  • Reassigned Medicare billing, Florida enrollment
  • 161 clinicians in this Medicare group
NPI 1780911206 (941) 436-5000

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

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
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
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 7

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

DR. ANNE MARIE T LAGOC MD
Pediatrics (Pediatric Emergency Medicine)
650 W LOMBARD ST
BALTIMORE, MD 21201
Baltimore City (410) 328-6335
FORREST T CLOSSON MD
Pediatrics (Pediatric Emergency Medicine)
650 W LOMBARD ST
BALTIMORE, MD 21201
Baltimore City (410) 328-2079
JULIA G ROSSELLI MD
Pediatrics (Pediatric Emergency Medicine)
650 W LOMBARD ST
BALTIMORE, MD 21201
Baltimore City (410) 328-6749
DR. CHRISTOPHER LEMAR WATSON MD
Hospitalist
650 W LOMBARD ST
BALTIMORE, MD 21201
Baltimore City (410) 328-6335
JENNIFER ELIZABETH GUYTHER MD
Pediatrics (Pediatric Emergency Medicine)
650 W LOMBARD ST
BALTIMORE, MD 21201
Baltimore City (410) 328-6335
RICHARD LICHENSTEIN M.D.
Pediatrics (Pediatric Emergency Medicine)
650 W LOMBARD ST
BALTIMORE, MD 21201
Baltimore City (410) 328-2079
ELIZABETH QUAAL HINES MD
Pediatrics (Pediatric Emergency Medicine)
650 W LOMBARD ST
BALTIMORE, MD 21201
Baltimore City (410) 328-6335

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 Diane Mcdonald's NPI number?

The NPI number for Diane Mcdonald is 1740222611. It was assigned to this individual provider in the NPPES registry on June 12, 2006.

Where is Diane Mcdonald located?

Diane Mcdonald practices at 650 W Lombard St University Of Maryland Pediatric Emergency Dept, Baltimore, MD 21201. The listed phone number is (410) 328-6335.

What is Diane Mcdonald's specialty?

The primary specialty registered for this NPI is Emergency Medicine, specializing in Pediatric Emergency Medicine, with taxonomy code 207PP0204X.

Is Diane Mcdonald enrolled in Medicare?

Yes. Diane Mcdonald is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Diane Mcdonald's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diane Mcdonald reassigns Medicare benefits to 2 organizations: Collier Health Services Inc (Immokalee, FL) and Southwest Florida Emergency Management LLC (Naples, FL). 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 Diane Mcdonald's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diane Mcdonald accept?

Health plans from Cigna HealthCare of Florida, Inc., Cigna Healthcare, Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company) and Oscar Health Maintenance Organization of Florida and 1 other insurer list Diane Mcdonald 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.

When was this NPI record last updated?

The NPPES record for Diane Mcdonald was last updated on March 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.