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DR. MARY ELLEN LAWRENCE M.D.
NPI 1922117738
Internal Medicine - Infectious Disease in Prescott, AZ

Active since August 29, 2006PECOS Enrolled
NAZ HOSPITALISTS, 1003 WILLOW CREEK RD, PRESCOTT, AZ 86305(928) 771-5470(928) 771-5471 Get Directions Write a Review

NPPES record last updated: February 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 12, 2025, Jul 13, 2023, Nov 15, 2022 and 1 more (4 updates tracked since 2020).

About Dr. Mary Ellen Lawrence M.d. NPPES

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

DR. MARY ELLEN LAWRENCE M.D. (NPI 1922117738) is an individual infectious disease provider in Prescott, Arizona, licensed in New Mexico (MD2003-0768) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922117738
Entity TypeIndividualFemale
Primary Taxonomy207RI0200X
Provider Legal NameDR. MARY ELLEN LAWRENCECredential: M.D.
Location AddressNAZ HOSPITALISTS, 1003 WILLOW CREEK RDPrescott, AZ 86305
Mailing Address6 Los Gatos LnSanta Fe, NM 87507-4258 · (505) 629-8260
Phone(928) 771-5470
Fax(928) 771-5471
Sole ProprietorNo
Enumeration DateAugust 29, 2006
Last NPPES UpdateFebruary 12, 20254 updates tracked since enumeration
NPPES CertifiedFebruary 12, 2025
✔ NPI 1922117738 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in NM · MD2003-0768
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedHospitalistTaxonomy 208M00000X · License 42015 (AZ)
NAZ HOSPITALISTS, Prescott, AZ 86305
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc, Imperial Insurance Companies, Inc..Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mary Ellen Lawrence 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

4

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

Yavapai Community Hospital Association
32 mi
Surgery
804 AINSWORTH DRIVE STE. 103
Prescott, AZ 86301
  • Reassigned Medicare billing, Arizona enrollment
  • 83 clinicians in this Medicare group
NPI 1649464454 (928) 445-2700
Hospitalist Medicine Healthcare LLC
171 mi
Hospitalist
2200 E SHOW LOW LAKE RD
Show Low, AZ 85901
  • Reassigned Medicare billing, Arizona enrollment
  • 39 clinicians in this Medicare group
NPI 1639594351 (928) 537-7011
Unm Medical Group Inc
358 mi
Multi-Specialty
2211 LOMAS NE
Albuquerque, NM 87106
  • Reassigned Medicare billing, New Mexico enrollment
  • 2,105 clinicians in this Medicare group
NPI 1831218627 (505) 272-3303
Hospitalist Medicine Physicians Of Texas, PLLC
1,082 mi
Internal Medicine
18951 N MEMORIAL DR
Humble, TX 77338
  • Reassigned Medicare billing, New Mexico enrollment
  • 251 clinicians in this Medicare group
NPI 1629307095 (281) 540-7700

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 3

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.
156 services70 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
62 services61 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.
48 services36 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 86305 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
$127.71 typical visit price
range $55.44 – $168.60
Typical copayment $31.92 (range $13.86 – $42.15)
Most-billed visit code 99204
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
4 suppliers40 claims40 services$16.13 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
5 suppliers52 claims52 services$83.51 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$33.72 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Ellen Lawrence's NPI number?

The NPI number for Mary Ellen Lawrence is 1922117738. It was assigned to this individual provider in the NPPES registry on August 29, 2006.

Where is Mary Ellen Lawrence located?

Mary Ellen Lawrence practices at Naz Hospitalists 1003 Willow Creek Rd, Prescott, AZ 86305. The listed phone number is (928) 771-5470.

What is Mary Ellen Lawrence's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Mary Ellen Lawrence enrolled in Medicare?

Yes. Mary Ellen Lawrence is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mary Ellen Lawrence's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ellen Lawrence reassigns Medicare benefits to 4 organizations: Yavapai Community Hospital Association (Prescott, AZ), Hospitalist Medicine Healthcare LLC (Show Low, AZ), Unm Medical Group Inc (Albuquerque, NM) and Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX). 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 Mary Ellen Lawrence's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Ellen Lawrence accept?

Health plans from Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and Imperial Insurance Companies, Inc. list Mary Ellen Lawrence 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 Mary Ellen Lawrence was last updated on February 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.