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SHIREEN S KNOWLES CRNP
NPI 1336441500
Nurse Practitioner - Family in Mobile, AL

Active since November 22, 2010PECOS EnrolledAccepts Medicare Assignment
6701 AIRPORT BLVD STE D100, MOBILE, AL 36608(251) 607-6117(251) 219-0746 Get Directions Write a Review

NPPES record last updated: March 16, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 16, 2023, Jun 14, 2017 (2 updates tracked since 2017).

About Shireen S Knowles Crnp NPPES

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

SHIREEN S KNOWLES CRNP (NPI 1336441500) is an individual family provider in Mobile, Alabama, licensed in Alabama (1097798) and active in the NPI registry since November 2010. She is enrolled in Medicare PECOS and is a graduate of University Of Alabama School Of Medicine (2010).

NPPES Registry Identity

NPI1336441500
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameSHIREEN S KNOWLESCredential: CRNP
Location Address6701 AIRPORT BLVD STE D100Mobile, AL 36608-6765
Mailing Address6701 Airport Blvd Ste D100Mobile, AL 36608-6765 · (251) 607-6117 · Fax (251) 219-0746
Phone(251) 607-6117
Fax(251) 219-0746
Sole ProprietorNo
Medical School CMSUniversity Of Alabama School Of MedicineGraduated 2010
Enumeration DateNovember 22, 2010
Last NPPES UpdateMarch 16, 20232 updates tracked since enumeration
NPPES CertifiedMarch 16, 2023
✔ NPI 1336441500 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in AL · 1097798
6701 AIRPORT BLVD STE D100, Mobile, AL 36608
Open in Google Maps ↗

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

Shireen S Knowles Crnp 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 ID2264621499
PECOS Enrollment IDI20110104000764
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 Reassignment

Medicare enrollment records show Shireen Knowles reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Petersen Neurospine, PLLC
Same address
Orthopaedic Surgery of the Spine
6701 AIRPORT BLVD, BUILDING D SUITE 100
Mobile, AL 36608
  • Reassigned Medicare billing, Alabama enrollment
  • 3 clinicians in this Medicare group
NPI 1639710882 (251) 607-6117

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

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 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.
34 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 36608 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
$81.90 typical visit price
range $52.65 – $161.63
Typical copayment $20.47 (range $13.16 – $40.40)
Most-billed visit code 99203
Established Patient
$93.72 typical visit price
range $16.56 – $131.65
Typical copayment $23.43 (range $4.14 – $32.91)
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.

Other Providers at the Same Location NPPES

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

MRS. REBECCA ROSS ESTES CRNP
Nurse Practitioner (Family)
6701 AIRPORT BLVD STE D100
MOBILE, AL 36608
Mobile County (251) 607-6117

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 Shireen Knowles's NPI number?

The NPI number for Shireen Knowles is 1336441500. It was assigned to this individual provider in the NPPES registry on November 22, 2010.

Where is Shireen Knowles located?

Shireen Knowles practices at 6701 Airport Blvd Ste D100, Mobile, AL 36608. The listed phone number is (251) 607-6117.

What is Shireen Knowles's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Shireen Knowles enrolled in Medicare?

Yes. Shireen Knowles 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 organization bills Medicare for Shireen Knowles's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Shireen Knowles reassigns Medicare benefits to Petersen Neurospine, PLLC (Mobile, AL). The 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 Shireen Knowles's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Shireen Knowles was last updated on March 16, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.