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WILLIAM W WALKER MD
NPI 1700889904
Internal Medicine - Pulmonary Disease in Anderson, SC

Active since May 23, 2005PECOS Enrolled
2000 EAST GREENVILLE ST, SUITE 1100, ANDERSON, SC 29621(864) 225-5667(864) 716-6746 Get Directions Write a Review

NPPES record last updated: August 19, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About William W Walker Md NPPES

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

WILLIAM W WALKER MD (NPI 1700889904) is an individual pulmonary disease provider in Anderson, South Carolina, licensed in South Carolina (7835) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1700889904
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameWILLIAM W WALKERCredential: MD
Location Address2000 EAST GREENVILLE ST, SUITE 1100Anderson, SC 29621-1714
Mailing Address2000 East Greenville St, Suite 1100Anderson, SC 29621-1714 · (864) 225-5667 · Fax (864) 716-6746
Phone(864) 225-5667
Fax(864) 716-6746
Sole ProprietorNo
Enumeration DateMay 23, 2005
Last NPPES UpdateAugust 19, 2011
✔ NPI 1700889904 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License✔ Licensed in SC · 7835
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
2000 EAST GREENVILLE ST, Anderson, SC 29621
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Other Identifiers 8

Other8607SC · Medicare Group Number
Medicaid000087326DGA
Medicare UPIND05556SC
Medicare PIND055568607SC
MedicaidGP4557SC
Medicare PIND055567111SC
OtherP00944914SC · Rr Medicare
Medicaid078356SC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter of North Carolina, First Choice Next.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William W Walker 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 9

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.
285 services103 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
161 services93 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
91 services54 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.
69 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.
47 services47 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.
20 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29621 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
$124.04 typical visit price
range $53.57 – $163.84
Typical copayment $31.01 (range $13.39 – $40.96)
Most-billed visit code 99204
Established Patient
$95.12 typical visit price
range $16.96 – $133.52
Typical copayment $23.78 (range $4.24 – $33.38)
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 13

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

Supplies for maintenance of non-insulin drug infusion catheter, per week (list drugs separately) A4221
DME-Other DME · category DE017N
1 supplier13 claims13 services$19.57 avg. paid by Medicare
Infusion supplies for external drug infusion pump, per cassette or bag (list drugs separately) A4222
DME-Medical/Surgical Supplies · category DA000N
2 suppliers26 claims26 services$38.97 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
5 suppliers106 claims107 services$14.22 avg. paid by Medicare
Portable oxygen contents, gaseous, 1 month's supply = 1 unit E0443
DME-Oxygen and Supplies · category DC000N
2 suppliers21 claims23 services$39.48 avg. paid by Medicare
Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
4 suppliers68 claims68 services$775.31 avg. paid by Medicare
Nebulizer, with compressor E0570
DME-Other DME · category DE000N
4 suppliers45 claims45 services$3.86 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 3

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

CAROLINA PULMONARY AND SLEEP
Internal Medicine (Pulmonary Disease)
2000 EAST GREENVILLE ST, SUITE 1100
ANDERSON, SC 29621
Anderson County (864) 225-5667
STEPHEN H HAND MD
Internal Medicine (Sleep Medicine)
2000 EAST GREENVILLE ST, SUITE 1100
ANDERSON, SC 29621
Anderson County (864) 225-5667
MRS. KRISTEN A HALL APRN NP
Nurse Practitioner
2000 EAST GREENVILLE ST, SUITE 1100
ANDERSON, SC 29621
Anderson County (864) 512-5667

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 William Walker's NPI number?

The NPI number for William Walker is 1700889904. It was assigned to this individual provider in the NPPES registry on May 23, 2005.

Where is William Walker located?

William Walker practices at 2000 East Greenville St Suite 1100, Anderson, SC 29621. The listed phone number is (864) 225-5667.

What is William Walker's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is William Walker enrolled in Medicare?

Yes. William Walker is registered in the Medicare PECOS enrollment system.

What insurance does William Walker accept?

Health plans from Ambetter from Absolute Total Care, Ambetter of North Carolina and First Choice Next list William Walker 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 William Walker was last updated on August 19, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.