DR. KRISTEN MARIE NASSERY MD
NPI 1396059440
Surgery in Oceanside, CA

Q: What is Kristen Nassery's NPI number?

The NPI number for Kristen Nassery is 1396059440. It was assigned to this individual provider in the NPPES registry on July 31, 2010. The provider is also known as Dr. Kristen Marie Blaker MD.

Q: What is Kristen Nassery's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Kristen Nassery was last updated on February 1, 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.

Active since July 31, 2010PECOS EnrolledAccepts Medicare Assignment

3601 VISTA WAY STE 203, OCEANSIDE, CA 92056(760) 724-5352(760) 724-5447 Get Directions Write a Review

NPPES record last updated: February 1, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 1, 2023, Jul 5, 2022, May 4, 2022 and 1 more (4 updates tracked since 2020).

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About Dr. Kristen Marie Nassery Md NPPES

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

DR. KRISTEN MARIE NASSERY MD (NPI 1396059440) is an individual surgery provider in Oceanside, California, licensed in California (A141260) and active in the NPI registry since July 2010. She is enrolled in Medicare PECOS and is a graduate of University Of Louisville School Of Medicine (2011).

NPPES Registry Identity

NPI1396059440

Entity TypeIndividualFemale

Primary Taxonomy208600000X

Provider Legal NameDR. KRISTEN MARIE NASSERYCredential: MD

Location Address3601 VISTA WAY STE 203Oceanside, CA 92056-4559

Mailing Address3601 Vista Way Ste 203Oceanside, CA 92056-4559 · (760) 724-5352 · Fax (760) 724-5447

Phone(760) 724-5352

Fax(760) 724-5447

Sole ProprietorYes

Medical School CMSUniversity Of Louisville School Of MedicineGraduated 2011

Enumeration DateJuly 31, 2010

Last NPPES UpdateFebruary 1, 20234 updates tracked since enumeration

NPPES CertifiedFebruary 1, 2023

✔ NPI 1396059440 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in CA · A141260

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Also ListedColon & Rectal SurgeryTaxonomy 208C00000X · License A141260 (CA)

3601 VISTA WAY STE 203, Oceanside, CA 92056

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Other Names 1

Former Name (1)Dr. Kristen Marie Blaker Md

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. Kristen Marie Nassery 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 ID1850662685

PECOS Enrollment IDI20200717001655

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 Kristen Nassery reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kristen M Nassery MD Inc

Same address

Surgery

3601 VISTA WAY STE 203
Oceanside, CA 92056

Reassigned Medicare billing, California enrollment

NPI 1528788783 (760) 724-5352

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 7

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.

Diagnostic exam of anus using an endoscope 46600

This procedure involves using a thin, flexible instrument called an endoscope to examine the anal area. It helps detect any abnormal conditions or issues. It's a safe, routine exam performed by a healthcare professional.

38 services32 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.

32 services27 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

30 services14 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.

22 services22 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.

21 services18 patients

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.

19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92056 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

$94.87 typical visit price

range $62.10 – $184.71

Typical copayment $23.71 (range $15.52 – $46.17)

Most-billed visit code 99203

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

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 5

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

HUSSNA WAKILY MD A PROFESSIONAL CORPORATION

Surgery