Joan Ann Howanitz, DDS, MS
Dentist · Rockville, MD
Joan Ann Howanitz, DDS, MS is a dentist with a practice address in Rockville, Maryland, and NPI 1912046293, issued on Feb 5, 2007. Check the license (Maryland 14578, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joan Ann Howanitz
- Credential
- DDS, MS
- Primary taxonomy
- Dentist 122300000X
- License numbers
- 14578 MD
55596 CA
050452-1 NY
0401414570 VA
Self-reported in NPPES; status is on the state search - Practice location
- 11921 Rockville Pike, Rockville, MD 20852
- Phone
- (240) 483-0775
- Enumerated
- Feb 5, 2007
- Record last updated
- Feb 28, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (240) 238-8626
- Entity
- Type 1 · individual
8 nearest dentist records → All 1,870 in Maryland → Look up another NPI →
Also registered at 11921 Rockville Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joan Ann Howanitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 14578Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average dentist in 2024
60 Medicare Part D claims for 35 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin20 claims
- Chlorhexidine Gluconate14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $14.45
1 payment: food and beverage; the largest payer was Philips North America LLC. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Joan Ann Howanitz among 1,870 dentist records in Maryland
Joan Ann Howanitz, DDS, MS is one of 1,870 dentist records with a practice address in Maryland. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 65% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2017 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
74 dentist records list a practice address in Rockville
They are 74 of the 14,353 NPPES records with a practice address in Rockville, and 1,870 dentist records in Maryland.
All 1,870 in Maryland → Every provider in Rockville → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Shannon Abel, D.D.S.Rockville, MD 208521326018185
- Martin Abel, D.D.S.Rockville, MD 208521285604058
- Asugman Atam, D.D.S.Rockville, MD 208521659572881
- Behram Dalal, DDSRockville, MD 208521801988993
- Harpreet Gill, GENERAL DENTIST DDSRockville, MD 208521053498931
- Jerald Hawk, D.D.S.Rockville, MD 208521902876824
- Sandra Hsieh, D.D.S.North Bethesda, MD 208521184750929
- Asghar Kazemifar, D.D.S.Rockville, MD 208521932240983
Common questions
What is Joan Ann Howanitz, DDS, MS's NPI number?
Joan Ann Howanitz, DDS, MS's National Provider Identifier (NPI) is 1912046293, issued on Feb 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joan Ann Howanitz, DDS, MS located?
The NPPES record lists a practice address at 11921 Rockville Pike, Rockville, MD, 20852. Phone: (240) 483-0775. Providers update this record themselves, so call before visiting.
How can I verify Joan Ann Howanitz, DDS, MS's license?
NPPES lists Maryland license number 14578, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Joan Ann Howanitz, DDS, MS prescribe under Medicare Part D?
In 2024, Joan Ann Howanitz, DDS, MS had 60 Medicare Part D claims for 35 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.