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

ELIZABETH K CLAYTON D.O.
NPI 1194167734
Hospitalist in Baltimore, MD

Active since July 24, 2013PECOS EnrolledAccepts Medicare Assignment
22 S GREENE ST, BALTIMORE, MD 21201(410) 328-2882(410) 328-2977 Get Directions Write a Review

NPPES record last updated: July 1, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 1, 2020, Jul 6, 2017 (2 updates tracked since 2017).

About Elizabeth K Clayton D.o. NPPES

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

ELIZABETH K CLAYTON D.O. (NPI 1194167734) is an individual hospitalist provider in Baltimore, Maryland, licensed in Maryland (H89049) and active in the NPI registry since July 2013. She is enrolled in Medicare PECOS, is affiliated with Union Hospital Of Cecil County, and is a graduate of Philadelphia College Of Osteopathic Medicine (2013).

NPPES Registry Identity

NPI1194167734
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameELIZABETH K CLAYTONCredential: D.O.
Location Address22 S GREENE STBaltimore, MD 21201-1590
Mailing AddressPo Box 64442Baltimore, MD 21264-4442 · (410) 328-8040 · Fax (443) 462-3514
Phone(410) 328-2882
Fax(410) 328-2977
Sole ProprietorNo
Medical School CMSPhiladelphia College Of Osteopathic MedicineGraduated 2013
Enumeration DateJuly 24, 2013
Last NPPES UpdateJuly 1, 20202 updates tracked since enumeration
NPPES CertifiedJuly 1, 2020
✔ NPI 1194167734 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in MD · H89049
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License H89049 (MD)
22 S GREENE ST, Baltimore, MD 21201
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AmeriHealth Caritas Next, Highmark Blue Cross Blue Shield Delaware.Insurance ›

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

Elizabeth K Clayton D.o. 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 ID8527286699
PECOS Enrollment IDI20170814000484
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 Elizabeth Clayton reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Maryland Physicians, P.A.
Same address
Internal Medicine
22 S GREENE ST
Baltimore, MD 21201
  • Reassigned Medicare billing, Maryland enrollment
  • Medicare enrollment name: University Of Maryland Physicians PA
  • 614 clinicians in this Medicare group
NPI 1104877075 (667) 214-1515
Union Hospital Of Cecil County, Inc
37 mi
Family Medicine
4853 PULASKI HWY STE 300
Perryville, MD 21903
  • Reassigned Medicare billing, Maryland enrollment
  • 512 clinicians in this Medicare group
NPI 1639920648 (410) 642-2289
Abigail Internal Medicine
52 mi
Internal Medicine
412 SUBURBAN DR
Newark, DE 19711
  • Reassigned Medicare billing, Delaware enrollment
NPI 1346052248 (443) 553-6114
Christiana Care Health Services Inc
58 mi
Gynecologic Oncology
4701 OGLETOWN STANTON RD, HELEN F. GRAHAM CANCER CENTER WEST, SUITE 2335
Newark, DE 19713
  • Reassigned Medicare billing, Delaware enrollment
  • Also billed through NPI 1245474329 (Delaware)
  • 1,531 clinicians in this Medicare group
NPI 1174508410 (302) 623-4285

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 7

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
100 services64 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
78 services77 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
43 services36 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
32 services32 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
27 services20 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
19 services19 patients

Hospital Affiliations CMS Care Compare

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

Union Hospital Of Cecil County

Acute Care Hospitals · Elkton, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210032
Location106 Bow StreetElkton, MD 21921 · Cecil County
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
$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 20

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

DR. LEONARD ANANG SOWAH M.D.
Internal Medicine
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (410) 706-4619
VISHAL BHATNAGAR MD
Student in an Organized Health Care Education/Training Program
22 S GREENE ST, MEDICINE, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
NANCE J FOX P.A.-C
Physician Assistant (Medical)
22 S GREENE ST, G2K36
BALTIMORE, MD 21201
Baltimore City (410) 328-1170
HILARY TAMARA WOLF MD
Pediatrics (Adolescent Medicine)
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (410) 328-7373
MS. LINDSAY BREAM O'MEARA CRNP
Nurse Practitioner (Acute Care)
22 S GREENE ST, SUITE S4D07
BALTIMORE, MD 21201
Baltimore City (410) 328-3365
NORA T OLIVER M.D., M.P.H.
Student in an Organized Health Care Education/Training Program
22 S GREENE ST, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-5756
SHOSHANA JO WEINER
Internal Medicine
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (617) 214-1332
JENNA VANLIERE CANZONIERO M.D.
Internal Medicine
22 S GREENE ST, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-5756

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 Elizabeth Clayton's NPI number?

The NPI number for Elizabeth Clayton is 1194167734. It was assigned to this individual provider in the NPPES registry on July 24, 2013.

Where is Elizabeth Clayton located?

Elizabeth Clayton practices at 22 S Greene St, Baltimore, MD 21201. The listed phone number is (410) 328-2882.

What is Elizabeth Clayton's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Elizabeth Clayton enrolled in Medicare?

Yes. Elizabeth Clayton 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 Elizabeth Clayton's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Clayton reassigns Medicare benefits to 4 organizations: University Of Maryland Physicians, P.A. (Baltimore, MD), Union Hospital Of Cecil County, Inc (Perryville, MD), Abigail Internal Medicine (Newark, DE) and Christiana Care Health Services Inc (Newark, DE). 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 Elizabeth Clayton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Elizabeth Clayton accept?

Health plans from AmeriHealth Caritas Next and Highmark Blue Cross Blue Shield Delaware list Elizabeth Clayton 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 Elizabeth Clayton affiliated with any hospitals?

According to CMS data, Elizabeth Clayton is affiliated with Union Hospital Of Cecil County.

When was this NPI record last updated?

The NPPES record for Elizabeth Clayton was last updated on July 1, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.