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ALLISON LEE SEBASTIAN AGACNP-BC
NPI 1275171902
Nurse Practitioner - Acute Care in Denver, CO

Active since December 12, 2019PECOS EnrolledAccepts Medicare Assignment
4362 DEPEW ST, DENVER, CO 80212(434) 941-0200 Get Directions Write a Review

NPPES record last updated: December 12, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Allison Lee Sebastian Agacnp-bc NPPES

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

ALLISON LEE SEBASTIAN AGACNP-BC (NPI 1275171902) is an individual acute care provider in Denver, Colorado, licensed in Colorado (0995003) and active in the NPI registry since December 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1275171902
Entity TypeIndividualFemale
Primary Taxonomy363LA2100X
Provider Legal NameALLISON LEE SEBASTIANCredential: AGACNP-BC
Location Address4362 DEPEW STDenver, CO 80212-7305
Mailing Address4362 Depew StDenver, CO 80212-7305 · (434) 941-0200
Phone(434) 941-0200
Sole ProprietorYes
Medical School CMSOtherGraduated 2019
Enumeration DateDecember 12, 2019
✔ NPI 1275171902 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2100X
License✔ Licensed in CO · 0995003
4362 DEPEW ST, Denver, CO 80212
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health, Oscar Health Maintenance Organization of Florida, Oscar Insurance Company.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

Allison Lee Sebastian Agacnp-bc 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 ID2466862248
PECOS Enrollment IDI20201105002387
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

3

Medicare enrollment records show Allison Sebastian reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Colorado Hospitalist Services, PLLC
7.2 mi
Hospitalist
4567 E 9TH AVE
Denver, CO 80220
  • Reassigned Medicare billing, Colorado enrollment
  • 180 clinicians in this Medicare group
NPI 1669115747 (303) 320-2121
Hospital Medicine Services Of Colorado, LLC
7.2 mi
Hospitalist
4567 E 9TH AVE
Denver, CO 80220
  • Reassigned Medicare billing, Colorado enrollment
  • 108 clinicians in this Medicare group
NPI 1366242323 (303) 320-2121
Rocky Mountain Healthcare Partners LLC
9.4 mi
Hospitalist
3425 S CLARKSON ST
Englewood, CO 80113
  • Reassigned Medicare billing, Colorado enrollment
  • 5 clinicians in this Medicare group
NPI 1710456512 (720) 923-2344

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

Areas of Expertise CMS Part B claims 6

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.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
154 services154 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.
105 services46 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
60 services60 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.
35 services34 patients
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.
12 services11 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.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80212 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
$89.43 typical visit price
range $58.06 – $174.82
Typical copayment $22.35 (range $14.51 – $43.70)
Most-billed visit code 99203
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
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.

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 Allison Sebastian's NPI number?

The NPI number for Allison Sebastian is 1275171902. It was assigned to this individual provider in the NPPES registry on December 12, 2019.

Where is Allison Sebastian located?

Allison Sebastian practices at 4362 Depew St, Denver, CO 80212. The listed phone number is (434) 941-0200.

What is Allison Sebastian's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.

Is Allison Sebastian enrolled in Medicare?

Yes. Allison Sebastian 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 Allison Sebastian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Allison Sebastian reassigns Medicare benefits to 3 organizations: Colorado Hospitalist Services, PLLC (Denver, CO), Hospital Medicine Services Of Colorado, LLC (Denver, CO) and Rocky Mountain Healthcare Partners LLC (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 Allison Sebastian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Allison Sebastian accept?

Health plans from Oscar Health, Oscar Health Maintenance Organization of Florida and Oscar Insurance Company list Allison Sebastian 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 Allison Sebastian was last updated on December 12, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.