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DR. APOSTOLOS JOHN GIANNAS O.D.
NPI 1790906378
Optometrist in Baltimore, MD

Active since May 01, 2007PECOS Enrolled
86.09/100
CMS Quality Rating
7106 RIDGE RD, SUITE 130, BALTIMORE, MD 21237(410) 866-2022(410) 866-2031 Get Directions Write a Review

NPPES record last updated: June 20, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Apostolos John Giannas O.d. NPPES

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

DR. APOSTOLOS JOHN GIANNAS O.D. (NPI 1790906378) is an individual optometrist in Baltimore, Maryland, licensed in Maryland (TA0814) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1790906378
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. APOSTOLOS JOHN GIANNASCredential: O.D.
Location Address7106 RIDGE RD, SUITE 130Baltimore, MD 21237-3875
Mailing Address38 Mitchell Dr.Abingdon, MD 21009-1629 · (410) 569-0163
Phone(410) 866-2022
Fax(410) 866-2031
Sole ProprietorYes
Enumeration DateMay 1, 2007
Last NPPES UpdateJune 20, 2016
✔ NPI 1790906378 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in MD · TA0814
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
Also ListedOptometrist · Corneal and Contact ManagementTaxonomy 152WC0802X · License TA0814 (MD)
7106 RIDGE RD, Baltimore, MD 21237
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINT59942MD

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of Tennessee.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Apostolos John Giannas O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

Katzen Medical Associates, PC
8.2 mi
Ophthalmology
1209 YORK RD, SUITE 200
Lutherville, MD 21093
  • Reassigned Medicare billing, Maryland enrollment
  • 40 clinicians in this Medicare group
NPI 1326052614 (410) 821-9490

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 3

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 complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
175 services175 patients
Established patient problem focused exam of visual system 92012
This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.
59 services57 patients
New patient complete exam of visual system 92004
A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.
36 services36 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21237 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
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.09/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality82.89
Promoting Interoperability85
Improvement Activities40

Other Providers at the Same Location NPPES 6

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

MEDSTAR MEDICAL GROUP II LLC
General Practice
7106 RIDGE RD
BALTIMORE, MD 21237
Baltimore County (410) 687-2300
DR. SHARI LEWIS M.D.
Internal Medicine (Nephrology)
7106 RIDGE RD, SUITE 155
BALTIMORE, MD 21237
Baltimore County (443) 559-8705
KATZEN MEDICAL ASSOCIATES, PC
Ophthalmology
7106 RIDGE RD
ROSEDALE, MD 21237
Baltimore County (410) 866-2022
KATZEN MEDICAL ASSOCIATES, PC
Optometrist
7106 RIDGE RD
ROSEDALE, MD 21237
Baltimore County (410) 866-2022
AMEDISYS MARYLAND, LLC
Hospice Care, Community Based
7106 RIDGE RD, SUITE 140
ROSEDALE, MD 21237
Baltimore County (410) 686-5635
AMEDISYS HOSPICE, LLC
Hospice Care, Community Based
7106 RIDGE RD, SUITE 140
ROSEDALE, MD 21237
Baltimore County (410) 686-5635

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 Apostolos Giannas's NPI number?

The NPI number for Apostolos Giannas is 1790906378. It was assigned to this individual provider in the NPPES registry on May 1, 2007.

Where is Apostolos Giannas located?

Apostolos Giannas practices at 7106 Ridge Rd Suite 130, Baltimore, MD 21237. The listed phone number is (410) 866-2022.

What is Apostolos Giannas's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Apostolos Giannas enrolled in Medicare?

Yes. Apostolos Giannas is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Apostolos Giannas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Apostolos Giannas reassigns Medicare benefits to Katzen Medical Associates, PC (Lutherville, MD). 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 Apostolos Giannas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Apostolos Giannas accept?

Health plans from BlueCross BlueShield of Tennessee list Apostolos Giannas 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 Apostolos Giannas was last updated on June 20, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.