Sharon Alyssa Zwillinger, MD
Psychiatry Physician · Hockessin, DE
Sharon Alyssa Zwillinger, MD is a psychiatry physician with a practice address in Hockessin, Delaware, and NPI 1558450940, issued on Oct 12, 2006. Check the license (Delaware C10005659, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Sharon Alyssa Zwillinger
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- C10005659 DE
Self-reported in NPPES; status is on the state search - Practice location
- 724 Yorklyn RD, Hockessin, DE 19707
- Phone
- (302) 239-2600
- Enumerated
- Oct 12, 2006
- Record last updated
- Dec 1, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (302) 235-2700
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 162 in Delaware → Look up another NPI →
Also registered at 724 Yorklyn RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mark Wingel, D.O.Family Medicine Physician1619966413
Verify Sharon Alyssa Zwillinger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C10005659Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average psychiatry physician in 2024
346 Medicare Part D claims for 21 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Lorazepam32 claims
- Duloxetine Hcl31 claims
- Alprazolam26 claims
- Olanzapine26 claims
- Clonazepam22 claims
- Bupropion Xl20 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.
Sharon Alyssa Zwillinger among 162 psychiatry physician records in Delaware
Sharon Alyssa Zwillinger, MD is one of 162 psychiatry physician records with a practice address in Delaware. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 62% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 45% of these records are
- Record last updated2015 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Delaware
There are 162 psychiatry physician records in Delaware.
All 162 in Delaware → Every provider in Hockessin → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Patricia Figgs, M.D.Middletown, DE 197091437449667
- Scott Houser, M.D.Claymont, DE 197031093844771
- Dilipkumar Joshi, M.D.Newark, DE 197111669565537
- Jeet Joshi, M.D.Newark, DE 197111356634901
- Phyllis Smoyer, M.D.Claymont, DE 197031487773891
- Panna Jolapara, MDNewark, DE 197021033146204
- Jay Weisberg, MDNewark, DE 197021669441648
- Praful Desai, M.D.Newark, DE 197131841383718
Common questions
What is Sharon Alyssa Zwillinger, MD's NPI number?
Sharon Alyssa Zwillinger, MD's National Provider Identifier (NPI) is 1558450940, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sharon Alyssa Zwillinger, MD located?
The NPPES record lists a practice address at 724 Yorklyn RD, Hockessin, DE, 19707. Phone: (302) 239-2600. Providers update this record themselves, so call before visiting.
How can I verify Sharon Alyssa Zwillinger, MD's license?
NPPES lists Delaware license number C10005659, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sharon Alyssa Zwillinger, MD prescribe under Medicare Part D?
In 2024, Sharon Alyssa Zwillinger, MD had 346 Medicare Part D claims for 21 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.