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DR. VANSTON O MASRI D.O.
NPI 1205087038
Anesthesiology in Denver, CO

Active since October 10, 2008PECOS EnrolledAccepts Medicare Assignment
1601 E 19TH AVE STE 3600, DENVER, CO 80218(720) 515-2353(844) 443-3968 Get Directions Write a Review

NPPES record last updated: May 5, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 5, 2021, Jun 3, 2020, May 10, 2018 (3 updates tracked since 2018).

About Dr. Vanston O Masri D.o. NPPES

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

DR. VANSTON O MASRI D.O. (NPI 1205087038) is an individual anesthesiology provider in Denver, Colorado, licensed in Colorado (0054513) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS, is affiliated with Inova Fair Oaks Hospital, and maintains a secondary practice location in Denver.

NPPES Registry Identity

NPI1205087038
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. VANSTON O MASRICredential: D.O.
Location Address1601 E 19TH AVE STE 3600Denver, CO 80218-1252
Mailing Address1601 E 19th Ave Ste 3600Denver, CO 80218-1252 · Fax (844) 443-3968
Phone(720) 515-2353
Fax(844) 443-3968
Sole ProprietorNo
Medical School CMSEdward Via Col Of Osteo Medicine-virginia CampusGraduated 2008
Enumeration DateOctober 10, 2008
Last NPPES UpdateMay 5, 20213 updates tracked since enumeration
NPPES CertifiedMay 5, 2021
✔ NPI 1205087038 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CO · 0054513
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 39.009748 (OH), TL2872 (CO)
1601 E 19TH AVE STE 3600, Denver, CO 80218
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Secondary Practice Location 1

Location 12045 N Franklin StDenver, CO 80205-5437 · Phone (303) 338-4545

Other Identifiers 2

Medicaid66107075CO
Other026606CO · Kaiser Commercial Number

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include 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

Dr. Vanston O Masri D.o. 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 ID1658528237
PECOS Enrollment IDI20150629002581, I20230809000122, I20230823002548
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

5

Medicare enrollment records show Vanston Masri reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dr Vanston Masri PLLC
Same address
Pain Medicine
1601 E 19TH AVE STE 3600
Denver, CO 80218
  • Reassigned Medicare billing, Colorado enrollment
NPI 1871100529 (720) 515-2353
Colorado Permanente Medical Group, P.C.
5.9 mi
Internal Medicine
10350 E DAKOTA AVE
Denver, CO 80247
  • Reassigned Medicare billing, Colorado enrollment
  • Medicare enrollment name: Colorado Permanente Medical Group PC
  • 1,715 clinicians in this Medicare group
NPI 1760599724 (303) 338-4545
Physician Anesthesia Services PC
9.6 mi
Anesthesiology
12911 W 40TH AVE
Golden, CO 80401
  • Reassigned Medicare billing, Colorado enrollment
  • 171 clinicians in this Medicare group
NPI 1861476590 (330) 321-6552
Us Anesthesia Partners Of Colorado Inc.
11 mi
Anesthesiology
8000 E MAPLEWOOD AVE STE 120
Greenwood Village, CO 80111
  • Reassigned Medicare billing, Colorado enrollment
  • 971 clinicians in this Medicare group
NPI 1922365782 (303) 438-3999
Inova Cares - Community
1,474 mi
Anesthesiology
3600 JOSEPH SIEWICK DR
Fairfax, VA 22033
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • 318 clinicians in this Medicare group
NPI 1861131906 (703) 391-3600

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.

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.
66 services30 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.
34 services20 patients
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level 64483
This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.
30 services16 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.
23 services23 patients
Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level 64484
This procedure involves injecting an anesthetic or steroid drug into the sacral spine nerve root. It's done under imaging guidance to ensure accuracy. The process can be repeated for each additional level of the spine to help manage pain or inflammation.
20 services11 patients
Anesthesia for retinal surgery 00145
Anesthesia for retinal surgery involves using medications to numb your eye and surrounding area. This prevents pain and discomfort during the procedure. You may also receive medication to help you relax. The anesthesia can be local (just your eye) or general (you're asleep).
13 services13 patients

Hospital Affiliations CMS Care Compare

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

Inova Fair Oaks Hospital

Acute Care Hospitals · Fairfax, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number490101
Location3600 Joseph Siewick DriveFairfax, VA 22033 · Fairfax County
Birthing friendly

Other Providers at the Same Location NPPES

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

DR VANSTON MASRI PLLC
Anesthesiology (Pain Medicine)
1601 E 19TH AVE STE 3600
DENVER, CO 80218
Denver County (720) 515-2353

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 Vanston Masri's NPI number?

The NPI number for Vanston Masri is 1205087038. It was assigned to this individual provider in the NPPES registry on October 10, 2008.

Where is Vanston Masri located?

Vanston Masri practices at 1601 E 19th Ave Ste 3600, Denver, CO 80218. The listed phone number is (720) 515-2353.

What is Vanston Masri's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Vanston Masri enrolled in Medicare?

Yes. Vanston Masri 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 Vanston Masri's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Vanston Masri reassigns Medicare benefits to 5 organizations: Dr Vanston Masri PLLC (Denver, CO), Colorado Permanente Medical Group, P.C. (Denver, CO), Physician Anesthesia Services PC (Golden, CO), Us Anesthesia Partners Of Colorado Inc. (Greenwood Village, CO) and Inova Cares - Community (Fairfax, VA). 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 Vanston Masri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Vanston Masri accept?

Health plans from Oscar Insurance Company list Vanston Masri 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 Vanston Masri affiliated with any hospitals?

According to CMS data, Vanston Masri is affiliated with Inova Fair Oaks Hospital.

When was this NPI record last updated?

The NPPES record for Vanston Masri was last updated on May 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.