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WARREN ANDREW CHANG M.D.
NPI 1407057920
Internal Medicine in Abingdon, VA

Active since May 31, 2007PECOS EnrolledAccepts Medicare Assignment
16000 JOHNSTON MEMORIAL DR, FOURTH FLOOR, ABINGDON, VA 24211(276) 258-4050(276) 258-4056 Get Directions Write a Review

NPPES record last updated: March 22, 2016. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Warren Andrew Chang M.d. NPPES

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

WARREN ANDREW CHANG M.D. (NPI 1407057920) is an individual internal medicine provider in Abingdon, Virginia, licensed in Virginia (0101241447) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Catawba Valley Medical Center, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1407057920
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWARREN ANDREW CHANGCredential: M.D.
Location Address16000 JOHNSTON MEMORIAL DR, FOURTH FLOORAbingdon, VA 24211-7664
Mailing AddressPo Box 3700Johnson City, TN 37602-3700 · (423) 302-1350 · Fax (423) 952-2145
Phone(276) 258-4050
Fax(276) 258-4056
Sole ProprietorNo
Medical School CMSOtherGraduated 1992
Enumeration DateMay 31, 2007
Last NPPES UpdateMarch 22, 2016
✔ NPI 1407057920 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in VA · 0101241447
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
16000 JOHNSTON MEMORIAL DR, Abingdon, VA 24211
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Other Identifiers 3

Medicare PINVV5919AVA
Medicare PIN016310A49
Medicaid1407057920VA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Warren Andrew Chang M.d. 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 ID3971688201
PECOS Enrollment IDI20160503002352
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 5

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 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.
272 services97 patients
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.
146 services67 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.
107 services106 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.
104 services103 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.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

Catawba Valley Medical Center

Acute Care Hospitals · Hickory, NC
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number340143
Location810 Fairgrove Church RdHickory, NC 28602 · Catawba County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 24211 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
$129.04 typical visit price
range $56.19 – $170.30
Typical copayment $32.26 (range $14.04 – $42.57)
Most-billed visit code 99204
Established Patient
$99.13 typical visit price
range $18.07 – $138.91
Typical copayment $24.78 (range $4.51 – $34.72)
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.

Reported Quality Measures

Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
100%250 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 2

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
2 suppliers22 claims22 services$14.43 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
4 suppliers34 claims34 services$69.70 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

ANGELA MARIE COOPER
Pharmacist
16000 JOHNSTON MEMORIAL DR
ABINGDON, VA 24211
Washington County (276) 258-3050
BLUE RIDGE MEDICAL MANAGEMENT CORPORATION
Dermatology
16000 JOHNSTON MEMORIAL DR, SUITE 101B
ABINGDON, VA 24211
Washington County (276) 258-1777
DR. JOE RUPE MD
Internal Medicine
16000 JOHNSTON MEMORIAL DR
ABINGDON, VA 24211
Washington County (276) 258-4050
MISS CATHY ANN HOPKINS PA
Physician Assistant
16000 JOHNSTON MEMORIAL DR
ABINGDON, VA 24211
Washington County (276) 258-1800
DAVID HUNT SMITH MD
Surgery
16000 JOHNSTON MEMORIAL DR, SUITE 101
ABINGDON, VA 24211
Washington County (276) 258-1777
JOHNSTON MEMORIAL HOSPITAL
General Acute Care Hospital
16000 JOHNSTON MEMORIAL DR
ABINGDON, VA 24211
Washington County (276) 258-1100
BLUE RIDGE MEDICAL MANAGEMENT CORPORATION
Urology
16000 JOHNSTON MEMORIAL DR, SUITE 312D
ABINGDON, VA 24211
Washington County (276) 783-5400
DR. BEVERLY TARA SMITH DO
Internal Medicine
16000 JOHNSTON MEMORIAL DR
ABINGDON, VA 24211
Washington County (276) 258-1000

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 Warren Chang's NPI number?

The NPI number for Warren Chang is 1407057920. It was assigned to this individual provider in the NPPES registry on May 31, 2007.

Where is Warren Chang located?

Warren Chang practices at 16000 Johnston Memorial Dr Fourth Floor, Abingdon, VA 24211. The listed phone number is (276) 258-4050.

What is Warren Chang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Warren Chang enrolled in Medicare?

Yes. Warren Chang 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.

Is Warren Chang affiliated with any hospitals?

According to CMS data, Warren Chang is affiliated with Catawba Valley Medical Center.

When was this NPI record last updated?

The NPPES record for Warren Chang was last updated on March 22, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.