JOHN HOWARD DAVIDSON PA
NPI 1043480056
Physician Assistant in Carbondale, IL

Active since March 05, 2008PECOS Enrolled
75.73/100
CMS Quality Rating
405 W JACKSON ST, CARBONDALE, IL 62901(618) 549-0721(618) 457-0469 Get Directions Write a Review

NPPES record last updated: January 11, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 11, 2021, Oct 10, 2019 (2 updates tracked since 2019).

About John Howard Davidson Pa NPPES

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

JOHN HOWARD DAVIDSON PA (NPI 1043480056) is an individual physician assistant in Carbondale, Illinois, licensed in Illinois (085001572) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1043480056
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameJOHN HOWARD DAVIDSONCredential: PA
Location Address405 W JACKSON STCarbondale, IL 62901-1462
Mailing Address16091 Swingley Ridge Rd, Suite #100Chesterfield, MO 63017-2056 · (636) 728-2200
Fax(618) 457-0469
Sole ProprietorNo
Enumeration DateMarch 5, 2008
Last NPPES UpdateJanuary 11, 20212 updates tracked since enumeration
NPPES CertifiedJanuary 11, 2021
NPI 1043480056 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License Licensed in IL · 085001572
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
405 W JACKSON ST, Carbondale, IL 62901

Secondary Practice Locations 3

Location 116091 Swingley Ridge Rd, Suite #100Chesterfield, MO 63017-2056 · Phone (636) 728-2200
Location 2201 S 14th StHerrin, IL 62948-3631 · Phone (618) 942-2171 · Fax (618) 351-4917
Location 32 S Hospital DrMurphysboro, IL 62966-3333 · Phone (618) 684-3156 · Fax (618) 529-0524

Other Identifiers 1

Other085001572IL · Illinois License

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

John Howard Davidson Pa 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 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.

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.
115 services113 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.
57 services57 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62901 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
$85.71 typical visit price
range $54.80 – $168.44
Typical copayment $21.42 (range $13.70 – $42.11)
Most-billed visit code 99203
Established Patient
$68.64 typical visit price
range $17.16 – $136.56
Typical copayment $17.16 (range $4.29 – $34.14)
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.

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.

75.73/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality63.09
Promoting Interoperability100
Improvement Activities40
Cost45.26

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.

Physician Assistant
405 W JACKSON ST
CARBONDALE, IL 62901
Pathology (Anatomic Pathology & Clinical Pathology)
405 W JACKSON ST
CARBONDALE, IL 62901
Emergency Medicine
405 W JACKSON ST, MEMORIAL HOSPITAL
CARBONDALE, IL 62901
Anesthesiology
405 W JACKSON ST
CARBONDALE, IL 62901
Physician Assistant
405 W JACKSON ST
CARBONDALE, IL 62901
Nurse Anesthetist, Certified Registered
405 W JACKSON ST
CARBONDALE, IL 62901
Emergency Medicine
405 W JACKSON ST
CARBONDALE, IL 62901
Physician Assistant
405 W JACKSON ST
CARBONDALE, IL 62901

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 John Davidson's NPI number?

The NPI number for John Davidson is 1043480056. It was assigned to this individual provider in the NPPES registry on March 5, 2008.

Where is John Davidson located?

John Davidson practices at 405 W Jackson St, Carbondale, IL 62901. The listed phone number is (618) 549-0721.

What is John Davidson's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is John Davidson enrolled in Medicare?

Yes. John Davidson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for John Davidson was last updated on January 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.