NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1700856556 M.D.
Verify on CMS → Mary Vanko, M.D.
Obstetrics & Gynecology Physician in Merrillville, Indiana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 45,074 in Obstetrics & Gynecology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
837
Medicare Part D claims · 172 beneficiaries · Obstetrics & Gynecology Physician avg: 188
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Mary Vanko, M.D. filed 837 Medicare Part D claims in 2024 as an Obstetrics & Gynecology Physician in Merrillville, Indiana, prescribing 85% generic.
- 837
- Part D claims, 2024
- 85%
- generic prescribing
- ≥72nd
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Mary Vanko, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1700856556), first enumerated 01/24/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 837 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1700856556 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1700856556
- ENUM-LEGACY 2006
- TAX-MID 45K Obstetrics &
- RX-LIGHT 837
- BOOK-LIGHT 863 in Indiana
- PHOTO-ENUM Sondra Sturim · 2006
Mary Vanko, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
837 ≥ 72nd percentile 72% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Mary Vanko, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Mary Vanko, M.D.?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
837 345% vs specialty avg
Specialty distribution in Indiana
How Obstetrics & Gynecology Physician compares to other specialties among Indiana providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Obstetrics & Gynecology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1700856556 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 01/24/2006 |
Brand vs generic prescribing mix · Typical
Mary Vanko, M.D. - brand share 15.0%
Obstetrics & Gynecology Physician average
15% brand-name claims vs 85% generic, on 837 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
837
Total Claims
$75K
Total Drug Cost
172
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,878.033
- Total Day Supply
- 54,005
- Brand vs Generic
- 15% brand / 85% generic
- Brand Drug Cost
- $56K
- Generic Drug Cost
- $19K
- Antibiotic Claims
- 38
Patient Demographics
- Average Patient Age
- 69.5 years
- Avg HCC Risk Score
- 0.91
- Age Distribution
- <65: 24, 65-74: 107, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mary Vanko, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Estradiol
Estradiol
165 claims
- Alendronate Sodium 60
Alendronate Sodium
60 claims
- Fluconazole 31
Fluconazole
31 claims
- Myrbetriq 26
Myrbetriq
26 claims
- Atorvastatin Calcium 20
Atorvastatin Calcium
20 claims
- Desmopressin Acetate 18
Desmopressin Acetate
18 claims
- Amitriptyline Hcl 17
Amitriptyline Hcl
17 claims
- Sertraline Hcl 17
Sertraline Hcl
17 claims
| Drug | Claims |
|---|---|
| Estradiol | 165 |
| Alendronate Sodium | 60 |
| Fluconazole | 31 |
| Myrbetriq Mirabegron | 26 |
| Atorvastatin Calcium | 20 |
| Desmopressin Acetate | 18 |
| Amitriptyline Hcl | 17 |
| Sertraline Hcl | 17 |
| Estring Estradiol | 16 |
| Paroxetine Hcl | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics & Gynecology Physician Overview
How Mary Vanko, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.
45,074
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
188
Avg Claims per Provider
Mary Vanko, M.D.'s 837 claims are above the specialty average of 188.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Vanko, both outside Indiana so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obstetrics & Gynecology Physician Providers in Indiana
Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as Vanko.
One of 863 Obstetrics & Gynecology Physician providers enrolled in Indiana, 5 are shown here.
Dr. Magdy Abdel Nour
M.D.
Terre Haute, IN
Omar Abuzeid
Crown Point, IN
Dr. Regina Adair
MD
Fort Wayne, IN
Dr. Kristin Adams
MD
Indianapolis, IN
Dr. Sophia Addy
MD
Merrillville, IN
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mary Vanko, M.D.'s specialty? ▼
Mary Vanko, M.D. specializes in Obstetrics & Gynecology Physician and practices in Merrillville, Indiana. Credentials: M.D..
How much does Mary Vanko, M.D. prescribe under Medicare Part D? ▼
In 2024, Mary Vanko, M.D. wrote 837 Medicare Part D claims totaling $75K in drug costs for 172 beneficiaries.
Where is Mary Vanko, M.D. located? ▼
Mary Vanko, M.D. is located at 280 EAST 90TH DRIVE, Merrillville, IN, 46410. Phone: (219) 769-7650.
What is Mary Vanko, M.D.'s NPI number? ▼
Mary Vanko, M.D.'s National Provider Identifier (NPI) is 1700856556, issued on 01/24/2006.
Does Mary Vanko, M.D. prescribe more brand-name or generic drugs? ▼
Mary Vanko, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $56K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 45,074 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 188 Medicare Part D claims per year.
What drugs does Mary Vanko, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Mary Vanko, M.D.'s most frequently prescribed drugs include Estradiol, Alendronate Sodium, Fluconazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Vanko, M.D. accept Medicare? ▼
Mary Vanko, M.D. appears in CMS Medicare data with 837 Part D claims and 172 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Vanko, M.D.'s credentials? ▼
Mary Vanko, M.D.'s NPI is 1700856556 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.