Nathan Hammel, MD
Orthopaedic Surgery Physician · Encinitas, CA
Nathan Hammel, MD is an orthopaedic surgery physician with a practice address in Encinitas, California, and NPI 1558435644, issued on Nov 20, 2006. Check the license (California A139718, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathan Hammel
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- A139718 CA
01065216A IN
Self-reported in NPPES; status is on the state search - Practice location
- 332 Santa FE Dr Ste 110, Encinitas, CA 92024
- Phone
- (760) 943-6700
- Enumerated
- Nov 20, 2006
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20171121001667); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2006
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 332 Santa FE Dr Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Luke Bremner, M.D.Orthopaedic Surgery Physician1982676896
- Justin Chan, M.D.Orthopaedic Hand Surgery Physician1619310208
- Kelsey Myrick, PA-CPhysician Assistant1750707998
- Therese Tedrow, PA-CPhysician Assistant1831879287
Verify Nathan Hammel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A139718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
63 Medicare Part D claims for 39 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 19 claims were for opioids.
Most prescribed
- Celecoxib14 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: $186.48
15 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 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.
Bills Medicare through one group practice
- San Dieguito Orthopedic Medical Center P CEncinitas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Hammel among 2,276 orthopaedic surgery physician records in California
Nathan Hammel, MD is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2006 · median 2003 among the 1,347 with a school on file
- Record last updated2018 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Encinitas → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Ryan Anderson, OT CEncinitas, CA 920241811015175
- Luke Bremner, M.D.Encinitas, CA 920241982676896
- Jamieson Glenn, M.D.Encinitas, CA 920241043418452
- Christopher Hajnik, M.D.Encinitas, CA 920241083883987
- Norah Harvey, M.D.Encinitas, CA 920241659570570
- Daniel Lepore, PAEncinitas, CA 920241760459622
- Ryan Meineke, M.D.Encinitas, CA 920241851579015
- Robert Nelson, OT-CEncinitas, CA 920241841384385
Common questions
What is Nathan Hammel, MD's NPI number?
Nathan Hammel, MD's National Provider Identifier (NPI) is 1558435644, issued on Nov 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Hammel, MD located?
The NPPES record lists a practice address at 332 Santa FE Dr Ste 110, Encinitas, CA, 92024. Phone: (760) 943-6700. Providers update this record themselves, so call before visiting.
How can I verify Nathan Hammel, MD's license?
NPPES lists California license number A139718, 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 Nathan Hammel, MD prescribe under Medicare Part D?
In 2024, Nathan Hammel, MD had 63 Medicare Part D claims for 39 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.