Stephen Hryniewicki, M.D.
Internal Medicine Physician · Long Beach, CA
Stephen Hryniewicki, M.D. is an internal medicine physician with a practice address in Long Beach, California, and NPI 1598871741, issued on Aug 21, 2006. Check the license (California G45594, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen Hryniewicki
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G45594 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2650 Elm Ave Ste 309, Long Beach, CA 90806
- Phone
- (562) 595-8549
- Enumerated
- Aug 21, 2006
- Entity
- Type 1 · individual
Also registered at 2650 Elm Ave Ste 309
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronald Bitter, M.D.Internal Medicine Physician1770691883
- Heather Gerard, P.A.Medical Physician Assistant1528245578
Verify Stephen Hryniewicki in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G45594Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
73% more Medicare Part D claims than the average internal medicine physician in 2024
4,813 Medicare Part D claims for 372 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 145 claims were for opioids.
Most prescribed
- Atorvastatin Calcium297 claims
- Amlodipine Besylate192 claims
- Levothyroxine Sodium174 claims
- Metoprolol Succinate143 claims
- Rosuvastatin Calcium128 claims
- Losartan Potassium104 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.
The practice group's Medicare quality score for 2023: 81.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $646.70
25 payments, mostly food and beverage; the largest payer was Sumitomo Pharma America, Inc.. The 65,274 providers of this specialty with any payment received $2,536.66 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.
One hospital or facility affiliation
- Long Beach Internal Medical Group Inc A Professional CorporationLong Beach, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
216 internal medicine physician records list a Long Beach practice address
They are 216 of the 13,650 NPPES records with a Long Beach practice address, and 20,403 internal medicine physician records in California.
All 216 in Long Beach → All 20,403 in California → Every provider in Long Beach →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Stephen Hryniewicki, M.D.'s NPI number?
Stephen Hryniewicki, M.D.'s National Provider Identifier (NPI) is 1598871741, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Hryniewicki, M.D. located?
The NPPES record lists a practice address at 2650 Elm Ave Ste 309, Long Beach, CA, 90806. Phone: (562) 595-8549. Providers update this record themselves, so call before visiting.
How can I verify Stephen Hryniewicki, M.D.'s license?
NPPES lists California license number G45594, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen Hryniewicki, M.D. prescribe under Medicare Part D?
In 2024, Stephen Hryniewicki, M.D. had 4,813 Medicare Part D claims for 372 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Stephen Hryniewicki, M.D.'s Medicare quality score?
The 2023 MIPS final score is 81.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
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 Aug 27, 2026.