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

CLARK H WILLIS MD
NPI 1700865623
Emergency Medicine in Salisbury, MD

Active since January 10, 2006PECOS Enrolled
75/100
CMS Quality Rating
100 E CARROLL ST, SALISBURY, MD 21801(410) 543-7100 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Clark H Willis Md NPPES

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

CLARK H WILLIS MD (NPI 1700865623) is an individual emergency medicine provider in Salisbury, Maryland, licensed in Maryland (D0063374) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1700865623
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameCLARK H WILLISCredential: MD
Location Address100 E CARROLL STSalisbury, MD 21801
Mailing AddressPo Box 3012Wilmington, DE 19804 · (302) 224-5678 · Fax (302) 224-2848
Phone(410) 543-7100
Sole ProprietorNo
Enumeration DateJanuary 10, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1700865623 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MD · D0063374
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
100 E CARROLL ST, Salisbury, MD 21801
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Clark H Willis 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 4

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
488 services458 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
461 services445 patients
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.
185 services181 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
166 services161 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21801 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
$89.75 typical visit price
range $57.99 – $175.57
Typical copayment $22.43 (range $14.49 – $43.89)
Most-billed visit code 99203
Established Patient
$102.11 typical visit price
range $18.66 – $143.02
Typical copayment $25.52 (range $4.66 – $35.75)
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.

75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice

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.

DR. DANIEL DEMETRIOS COLLECTOR MD
Student in an Organized Health Care Education/Training Program
100 E CARROLL ST
SALISBURY, MD 21801
Wicomico County (410) 546-6400
TIDALHEALTH SPECIALTY CARE
Pediatrics (Neonatal-Perinatal Medicine)
100 E CARROLL ST
SALISBURY, MD 21801
Wicomico County (410) 543-7749
ALEX L MAH MD
Anesthesiology
100 E CARROLL ST
SALISBURY, MD 21801
Wicomico County (410) 543-7375
MICHELLE H GRBIC MS CCC-SLP
Speech-Language Pathologist
100 E CARROLL ST
SALISBURY, MD 21801
Wicomico County (410) 546-6400
DR. SAVANNAH FINLEY DO
Student in an Organized Health Care Education/Training Program
100 E CARROLL ST
SALISBURY, MD 21801
Wicomico County (410) 546-6400
BRENDA MARTIN CRNP
Nurse Practitioner
100 E CARROLL ST
SALISBURY, MD 21801
Wicomico County (410) 543-7531
CHARLES B SILVIA JR. MD
Internal Medicine
100 E CARROLL ST, INPATIENT SERVICES
SALISBURY, MD 21801
Wicomico County (410) 543-7536
WILLIAM C TODD MD
Emergency Medicine
100 E CARROLL ST
SALISBURY, MD 21801
Wicomico County (410) 543-7100

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 Clark Willis's NPI number?

The NPI number for Clark Willis is 1700865623. It was assigned to this individual provider in the NPPES registry on January 10, 2006.

Where is Clark Willis located?

Clark Willis practices at 100 E Carroll St, Salisbury, MD 21801. The listed phone number is (410) 543-7100.

What is Clark Willis's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Clark Willis enrolled in Medicare?

Yes. Clark Willis is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Clark Willis was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 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.