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NATHAN ANICAS WALKER M.D.
NPI 1992119879
Psychiatry & Neurology - Sleep Medicine in Chapel Hill, NC

Active since June 18, 2014PECOS EnrolledAccepts Medicare Assignment
101 MANNING DRIVE, CHAPEL HILL, NC 27599(919) 966-8162 Get Directions Write a Review

NPPES record last updated: June 17, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 7, 2019, Mar 21, 2017 (2 updates tracked since 2017).

About Nathan Anicas Walker M.d. NPPES

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

NATHAN ANICAS WALKER M.D. (NPI 1992119879) is an individual sleep medicine provider in Chapel Hill, North Carolina, licensed in North Carolina (2020-02678) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Unc Hospitals, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1992119879
Entity TypeIndividualMale
Primary Taxonomy2084S0012X
Provider Legal NameNATHAN ANICAS WALKERCredential: M.D.
Location Address101 MANNING DRIVEChapel Hill, NC 27599-1962
Mailing Address300 Meadowmont Village Cir Ste 200Chapel Hill, NC 27517-7518 · (984) 974-4401
Phone(919) 966-8162
Sole ProprietorYes
Medical School CMSOtherGraduated 2013
Enumeration DateJune 18, 2014
Last NPPES UpdateJune 17, 20222 updates tracked since enumeration
NPPES CertifiedJune 17, 2022
✔ NPI 1992119879 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Sleep MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084S0012X
License✔ Licensed in NC · 2020-02678
Definition
A Psychiatrist or Neurologist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
101 MANNING DRIVE, Chapel Hill, NC 27599
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of NC, UnitedHealthcare.Insurance ›

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

Nathan Anicas Walker 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 ID6305197385
PECOS Enrollment IDI20200819001007
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 10

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
57 services47 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.
37 services33 patients
Sleep study in sleep lab with continuous airway pressure (6 years or older) 95811
A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.
35 services35 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.
32 services11 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.
23 services11 patients
Sleep study in sleep lab (6 years or older) 95810
A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.
21 services21 patients

Hospital Affiliations CMS Care Compare 3

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

Unc Hospitals

Acute Care Hospitals · Chapel Hill, NC
5/5 CMS rating
OwnershipGovernment - State
CMS Certification Number340061
Location101 Manning DriveChapel Hill, NC 27514 · Orange County
Emergency services Birthing friendly

Rex Hospital

Acute Care Hospitals · Raleigh, NC
5/5 CMS rating
OwnershipGovernment - State
CMS Certification Number340114
Location4420 Lake Boone TrailRaleigh, NC 27607 · Wake County
Emergency services Birthing friendly

Unc Health Nash

Acute Care Hospitals · Rocky Mount, NC
4/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number340147
Location2460 Curtis Ellis DriveRocky Mount, NC 27804 · Nash County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 27599 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
$125.01 typical visit price
range $54.12 – $165.09
Typical copayment $31.25 (range $13.53 – $41.27)
Most-billed visit code 99204
Established Patient
$95.94 typical visit price
range $17.21 – $134.61
Typical copayment $23.98 (range $4.30 – $33.65)
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 12

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

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
12 suppliers30 claims30 services$36.55 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
11 suppliers33 claims33 services$93.29 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
9 suppliers22 claims59 services$35.81 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
5 suppliers12 claims66 services$15.94 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
8 suppliers20 claims20 services$51.75 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
12 suppliers29 claims29 services$17.00 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.

DR. DENISE LIZNETT TORRES MD, MPH
Internal Medicine (Addiction Medicine)
101 MANNING DRIVE
CHAPEL HILL, NC 27599
Orange County (917) 900-6690
JOHNATHAN HARRY STATHOPOULOS MD
Student in an Organized Health Care Education/Training Program
101 MANNING DRIVE, CB# 7160
CHAPEL HILL, NC 27599
Orange County (984) 974-3982
KEVIN ALEXANDER TAM MD
Student in an Organized Health Care Education/Training Program
101 MANNING DRIVE, OLD CLINIC BUILDING 3020 CAMPUS BOX# 7570
CHAPEL HILL, NC 27599
Orange County (919) 966-4150
ELIZABETH KOTZEN MD
Internal Medicine (Nephrology)
101 MANNING DRIVE
CHAPEL HILL, NC 27599
Orange County (919) 966-2561
DR. COLLETTE MARIA TILLY MD
Student in an Organized Health Care Education/Training Program
101 MANNING DRIVE
CHAPEL HILL, NC 27599
Orange County (919) 962-3624
JOHN TASSO VARVARIKOS
Radiology (Diagnostic Radiology)
101 MANNING DRIVE
CHAPEL HILL, NC 27599
Orange County (919) 966-6646
DR. KENAN MILES PENASKOVIC MD
Psychiatry & Neurology (Psychiatry)
101 MANNING DRIVE
CHAPEL HILL, NC 27599
Orange County (919) 966-4166
ESTHER MIAH MD
Psychiatry & Neurology (Psychiatry)
101 MANNING DRIVE
CHAPEL HILL, NC 27599
Orange County (984) 974-2194

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 Nathan Walker's NPI number?

The NPI number for Nathan Walker is 1992119879. It was assigned to this individual provider in the NPPES registry on June 18, 2014.

Where is Nathan Walker located?

Nathan Walker practices at 101 Manning Drive, Chapel Hill, NC 27599. The listed phone number is (919) 966-8162.

What is Nathan Walker's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Sleep Medicine, with taxonomy code 2084S0012X.

Is Nathan Walker enrolled in Medicare?

Yes. Nathan Walker 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.

What insurance does Nathan Walker accept?

Health plans from Blue Cross and Blue Shield of NC and UnitedHealthcare list Nathan 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.

Is Nathan Walker affiliated with any hospitals?

According to CMS data, Nathan Walker is affiliated with Unc Hospitals, Rex Hospital and Unc Health Nash.

When was this NPI record last updated?

The NPPES record for Nathan Walker was last updated on June 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.