Periodontics
NUCC 1223P0300X · Dentist
6,120 CMS NPPES-registered providers across 53 states · 122nd of 690 specialties by headcount.
Where this specialty sits in the corpus
Periodontics ranks 122nd of 690 NUCC specialties by CMS NPPES headcount (0.08% of all registered NPIs), densest in California; per resident Massachusetts leads.
- 6,120
- NPPES providers in specialty
- 122nd
- of 690 specialties
- 540
- state-share HHI
- 61.7%
- Part D prescriber share
Massachusetts is densest per capita (2.9× the national rate; District of Columbia 2.1×); 2.3% of the Dentist category.
Taxonomy fingerprint
Periodontics (NUCC 1223P0300X; 61.7% Part D prescribers (3,776 of 6,120); avg 279 Part D claims/prescriber (384th of 572); Open Payments avg $1K/physician (236th of 551; 2,661 paid, $3.5M total); state-share HHI 540; next-larger headcount neighbor Radiation Oncology Physician (+21); next-smaller Pharmacotherapy Pharmacist (-50)).
Next larger: Radiation Oncology Physician (6,141) Next smaller: Pharmacotherapy Pharmacist (6,070)
Population-adjusted state index
Each multiple is this specialty's providers-per-resident in a state divided by the national rate (Census Vintage population estimates). Raw headcount favors large states; this ranking surfaces denser markets.
Over-indexed vs national rate
- Massachusetts 2.9× · 5.2/100k
- District of Columbia 2.1× · 3.8/100k
- New Jersey 1.7× · 3.1/100k
- Connecticut 1.7× · 3/100k
- New York 1.5× · 2.7/100k
Under-indexed vs national rate
- Arkansas 0.32× · 0.6/100k
- North Dakota 0.35× · 0.6/100k
- South Dakota 0.36× · 0.7/100k
- Mississippi 0.39× · 0.7/100k
- Alaska 0.45× · 0.8/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 863 |
| 2 | New York | 537 |
| 3 | Florida | 450 |
| 4 | Texas | 426 |
| 5 | Massachusetts | 367 |
| 6 | New Jersey | 286 |
| 7 | Pennsylvania | 233 |
| 8 | Virginia | 203 |
| 9 | Illinois | 190 |
| 10 | Ohio | 188 |
| 11 | Washington | 171 |
| 12 | Maryland | 151 |
| 13 | Michigan | 149 |
| 14 | North Carolina | 147 |
| 15 | Georgia | 146 |
Top Cities for Periodontics
| # | City | Providers |
|---|---|---|
| 1 | New YorkNew York | 165 |
| 2 | BostonMassachusetts | 147 |
| 3 | HoustonTexas | 69 |
| 4 | Los AngelesCalifornia | 64 |
| 5 | San FranciscoCalifornia | 63 |
| 6 | San AntonioTexas | 53 |
| 7 | PhiladelphiaPennsylvania | 51 |
| 8 | ChicagoIllinois | 49 |
| 9 | DallasTexas | 44 |
| 10 | RichmondVirginia | 42 |
| 11 | San DiegoCalifornia | 38 |
| 12 | ColumbusOhio | 38 |
Sample Periodontics NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Madjid Matin, DMDChevy Chase, MD |
| 2 | Mehrshid Sedaghatpour, DDSGreat Neck, NY |
| 3 | Eugene Kaplan, DDSLong Beach, CA |
| 4 | John Carman, DDSPleasanton, CA |
| 5 | Ralph Vandersloot, DDS, MSPleasanton, CA |
| 6 | Jeanne Fourrier, D.D.S.Surfside Beach, SC |
| 7 | Theresa Cheng, D.D.S.Issaquah, WA |
| 8 | Michael Oppenheimer, D.M.D.Fairfax, VA |
| 9 | James Fili, DDSNashville, TN |
| 10 | Joel Brooks, D.D.S.Easton, PA |
| 11 | Valerie Smith, DMDMansfield, MA |
| 12 | Constantine Stamatelakys, DDSGreenfield, WI |
| 13 | Jon Flynn, D.M.D., M.D.S.Chattanooga, TN |
| 14 | Monique Flynn, D.D.S., M.D.S.Chattanooga, TN |
| 15 | Joseph Fink, D.D.S.New York, NY |
| 16 | Steven Bear, DDSPatchogue, NY |
| 17 | Charles Fields, DMDReston, VA |
| 18 | Kourosh Harandi, DDS., MS.Pinole, CA |
Related Specialties
Adjacent specialties in the NUCC Health Care Provider Taxonomy - same Dentist category.
Frequently Asked Questions
Where does the large Periodontics headcount concentrate?
How large is Periodontics's Open Payments footprint?
How heavy is Periodontics Part D prescribing at scale?
Data sources and methodology
Provider data from CMS NPPES (download.cms.gov/nppes). Specialty classification from NUCC Health Care Provider Taxonomy (nucc.org). Part D averages from the CMS Medicare Part D Prescriber PUF; industry payments from CMS Open Payments 2024. Counts reflect self-designated primary taxonomy at NPI enrollment. PlainDoctor does not rate or rank providers. Methodology · About
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 2026-08-27.