Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ERIK CLEMENTS PARKER MD
NPI 1992712335
Neurological Surgery in Boulder, CO

Active since August 01, 2006PECOS EnrolledAccepts Medicare Assignment
4743 ARAPAHOE AVE STE 100, BOULDER, CO 80303(303) 938-5700 Get Directions Write a Review

NPPES record last updated: October 12, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 12, 2026, Jun 23, 2021, Jan 14, 2021 and 1 more (4 updates tracked since 2017).

About Dr. Erik Clements Parker Md NPPES

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

DR. ERIK CLEMENTS PARKER MD (NPI 1992712335) is an individual neurological surgery provider in Boulder, Colorado, licensed in Colorado (DR.0053440) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Arkansas College Of Medicine (1998).

NPPES Registry Identity

NPI1992712335
Entity TypeIndividualMale
Primary Taxonomy207T00000X
Provider Legal NameDR. ERIK CLEMENTS PARKERCredential: MD
Location Address4743 ARAPAHOE AVE STE 100Boulder, CO 80303-1123
Mailing AddressPo Box 9049Boulder, CO 80301-9049 · (303) 938-5700
Sole ProprietorNo
Medical School CMSUniversity Of Arkansas College Of MedicineGraduated 1998
Enumeration DateAugust 1, 2006
Last NPPES UpdateOctober 12, 20264 updates tracked since enumeration
NPPES CertifiedOctober 12, 2026
✔ NPI 1992712335 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
Licenses✔ Licensed in CO · DR.0053440✔ Licensed in NY · 226837
Definition
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
4743 ARAPAHOE AVE STE 100, Boulder, CO 80303

Secondary Practice Locations 2

Location 12045 N Franklin StDenver, CO 80205-5437 · Phone (303) 338-4545
Location 24743 Arapahoe Ave Ste 202Boulder, CO 80303-1128 · Phone (303) 938-5700

Other Identifiers 6

Other3700997Aetna Hmo
Other226837Hip
Other7374603Aetna Ppo
Other0104052Ghi
Other027860CO · Kaiser Commercial Number
Other0M1984Healthnet

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Erik Clements Parker Md 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 ID6204881139
PECOS Enrollment IDI20140506000447
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

2

Medicare enrollment records show Erik Parker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Medical Specialty
4743 ARAPAHOE AVE STE 100
Boulder, CO 80303
  • Reassigned Medicare billing, Colorado enrollment
  • 283 clinicians in this Medicare group
Neurological Surgery
3501 S CLARKSON ST
Englewood, CO 80113
  • Reassigned Medicare billing, Colorado enrollment
  • 10 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80303 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
$132.55 typical visit price
range $58.06 – $174.82
Typical copayment $33.13 (range $14.51 – $43.70)
Most-billed visit code 99204
Established Patient
$72.20 typical visit price
range $18.88 – $142.79
Typical copayment $18.05 (range $4.72 – $35.69)
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.

Other Providers at the Same Location NPPES 10

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

Nurse Practitioner
4743 ARAPAHOE AVE STE 100
BOULDER, CO 80303
Neurological Surgery
4743 ARAPAHOE AVE STE 100
BOULDER, CO 80303
Clinic/Center (Medical Specialty)
4743 ARAPAHOE AVE STE 100
BOULDER, CO 80303
Neurological Surgery
4743 ARAPAHOE AVE STE 100
BOULDER, CO 80303
Nurse Practitioner (Family)
4743 ARAPAHOE AVE STE 100
BOULDER, CO 80303
Physician Assistant (Surgical)
4743 ARAPAHOE AVE STE 100
BOULDER, CO 80303
Neurological Surgery
4743 ARAPAHOE AVE STE 100
BOULDER, CO 80303
Surgery
4743 ARAPAHOE AVE STE 100
BOULDER, CO 80303

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 Erik Parker's NPI number?

The NPI number for Erik Parker is 1992712335. It was assigned to this individual provider in the NPPES registry on August 1, 2006.

Where is Erik Parker located?

Erik Parker practices at 4743 Arapahoe Ave Ste 100, Boulder, CO 80303. The listed phone number is (303) 938-5700.

What is Erik Parker's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Erik Parker enrolled in Medicare?

Yes. Erik Parker 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.

Which organizations bill Medicare for Erik Parker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Erik Parker reassigns Medicare benefits to 2 organizations: Boulder Community Health (Boulder, CO) and Neuro On Call PLLC (Englewood, CO). 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 Erik Parker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Erik Parker accept?

Health plans from Select Health list Erik Parker 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 Erik Parker was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 days 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.