NPI registry status
Active
2026 NPPES data Periodontics NPI 1821250630 D.D.S.
Verify on CMS → Alexander Tzanos, D.D.S.
Periodontics in Crystal Lake, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,120 in Periodontics, 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
492
Medicare Part D claims · 140 beneficiaries · Periodontics avg: 279
Industry payments
$208.6
3 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Alexander Tzanos, D.D.S. filed 492 Medicare Part D claims in 2024 as a Periodontics in Crystal Lake, Illinois.
- 492
- Part D claims, 2024
- $208.6
- industry payments (Sunshine Act)
- ≥61st
- 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 Alexander Tzanos, D.D.S.
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 1821250630), first enumerated 07/02/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 492 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$208.6 in reported industry payments (3 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Alexander Tzanos, D.D.S.'s individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- 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 1821250630 · Periodontics
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1821250630
- ENUM-MID 2008
- TAX-MID 6K Periodontics
- RX-LIGHT 492
- BOOK-THIN 190 in Illinois
- PHOTO-ENUM Campo Perez, DDS · 2008
Alexander Tzanos, D.D.S.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
492 ≥ 61st percentile 61% 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
What does the federal data show about Alexander Tzanos, D.D.S.?
Quality data not reportedPrimary specialty
Periodontics
Medicare Part D claims
492 76% vs specialty avg
Specialty distribution in Illinois
How Periodontics compares to other specialties among Illinois 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 Periodontics. 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 | 1821250630 |
|---|---|
| Specialty | Periodontics |
| Credentials | D.D.S. |
| Gender | Male |
| NPI Issued | 07/02/2008 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Alexander Tzanos, D.D.S.. Source: openpaymentsdata.cms.gov.
Total received
$209
Largest payer
Keystone Dental Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Alexander Tzanos, D.D.S.. To verify Alexander Tzanos, D.D.S.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
492
Total Claims
$2K
Total Drug Cost
140
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 492
- Total Day Supply
- 4,200
- Generic Drug Cost
- $2K
- Opioid Claims
- 86 (17.5% rate)
- Antibiotic Claims
- 228
Patient Demographics
- Average Patient Age
- 74.4 years
- Avg HCC Risk Score
- 0.78
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 0, 65-74: 79, 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 Alexander Tzanos, D.D.S. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amoxicillin
Amoxicillin
123 claims
- Chlorhexidine Gluc…
Chlorhexidine Gluconate
85 claims
- Ibuprofen
Ibuprofen
72 claims
- Acetaminophen-Code…
Acetaminophen-Codeine
70 claims
- Amoxicillin-Clavul… 37
Amoxicillin-Clavulanate Potass
37 claims
- Metronidazole 29
Metronidazole
29 claims
- Clindamycin Hcl 18
Clindamycin Hcl
18 claims
- Tramadol Hcl 16
Tramadol Hcl
16 claims
| Drug | Claims |
|---|---|
| Amoxicillin | 123 |
| Chlorhexidine Gluconate | 85 |
| Ibuprofen | 72 |
| Acetaminophen-Codeine Acetaminophen With Codeine | 70 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 37 |
| Metronidazole | 29 |
| Clindamycin Hcl | 18 |
| Tramadol Hcl | 16 |
| Ciprofloxacin Hcl | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Periodontics Overview
How Alexander Tzanos, D.D.S. fits within the Periodontics landscape nationally.
6,120
Periodontics Providers in US
53
States with Periodontics
279
Avg Claims per Provider
Alexander Tzanos, D.D.S.'s 492 claims are above the specialty average of 279.
Nationwide Periodontics peers with similar MIPS or enrollment year
Two federal-record peer sets for Tzanos, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Periodontics Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Tzanos.
One of 190 Periodontics providers enrolled in Illinois, 5 are shown here.
Dr. Orlando Abreu
DDS, MS
Palatine, IL
Dr. Haider Aljewari
DMD
Champaign, IL
Dr. Nicholas Amigoni
DDS
Rolling Meadows, IL
Dr. Dorothy Anasinski
D.D.S.
Niles, IL
John Anderson
Gurnee, IL
Compare Periodontics nationally: see state-by-state distribution →
Frequently Asked Questions
What is Alexander Tzanos, D.D.S.'s specialty? ▼
Alexander Tzanos, D.D.S. specializes in Periodontics and practices in Crystal Lake, Illinois. Credentials: D.D.S..
How much does Alexander Tzanos, D.D.S. prescribe under Medicare Part D? ▼
In 2024, Alexander Tzanos, D.D.S. wrote 492 Medicare Part D claims totaling $2K in drug costs for 140 beneficiaries.
Where is Alexander Tzanos, D.D.S. located? ▼
Alexander Tzanos, D.D.S. is located at 411 E CONGRESS PKWY STE D, Crystal Lake, IL, 60014. Phone: (814) 455-6550.
What is Alexander Tzanos, D.D.S.'s NPI number? ▼
Alexander Tzanos, D.D.S.'s National Provider Identifier (NPI) is 1821250630, issued on 07/02/2008.
Does Alexander Tzanos, D.D.S. prescribe opioids? ▼
Yes, Alexander Tzanos, D.D.S. had 86 opioid claims in 2024 with an opioid prescribing rate of 17.5%.
How many Periodontics providers are there in the US? ▼
There are 6,120 Periodontics providers across 53 states in the US. The average Periodontics provider writes 279 Medicare Part D claims per year.
What drugs does Alexander Tzanos, D.D.S. prescribe most often? ▼
Based on 2024 Medicare Part D data, Alexander Tzanos, D.D.S.'s most frequently prescribed drugs include Amoxicillin, Chlorhexidine Gluconate, Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alexander Tzanos, D.D.S. accept Medicare? ▼
Alexander Tzanos, D.D.S. appears in CMS Medicare data with 492 Part D claims and 140 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alexander Tzanos, D.D.S.'s credentials? ▼
Alexander Tzanos, D.D.S.'s NPI is 1821250630 with credentials D.D.S.. 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.