Joshua L. Greenspan, M.D.
Pain Medicine (Anesthesiology) Physician · Portsmouth, NH
Joshua L. Greenspan, M.D. is a pain medicine (anesthesiology) physician with a practice address in Portsmouth, New Hampshire, and NPI 1962457218, issued on May 24, 2006. Check the license (New Hampshire 13011, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Joshua L. Greenspan
- Credential
- M.D.
- Primary taxonomy
- Pain Medicine (Anesthesiology) Physician 207LP2900X
- License number
- 13011 NH
Self-reported in NPPES; status is on the state search - Practice location
- 14 Manchester Square, Portsmouth, NH 03801
- Phone
- (603) 766-8500
- Enumerated
- May 24, 2006
- Record last updated
- Feb 12, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid IDs
- 432039999 ME
3075123 NH - Medicare enrollment
- Enrolled (PECOS I20060125000463); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 1994
- Entity
- Type 1 · individual
8 nearest pain medicine (anesthesiology) physician records → All 34 in New Hampshire → Look up another NPI →
Verify Joshua L. Greenspan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 13011Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% more Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024
2,714 Medicare Part D claims for 227 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 1,646 claims were for opioids.
Most prescribed
- Oxycodone Hcl756 claims
- Hydrocodone-Acetaminophen276 claims
- Gabapentin122 claims
- Oxycodone-Acetaminophen122 claims
- Tramadol Hcl91 claims
- Tizanidine Hcl78 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 MIPS final score for 2023 (Medicare payment program): 99.7 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $449.27
9 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 2,789 providers of this specialty with any payment received $3,225.41 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.
Joshua L. Greenspan among 34 pain medicine (anesthesiology) physician records in New Hampshire
Joshua L. Greenspan, M.D. is one of 34 pain medicine (anesthesiology) physician records with a practice address in New Hampshire. 68% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 44% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1994 · median 2009 among the 20 with a school on file
- Record last updated2014 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine (Anesthesiology) Physician providers in New Hampshire
There are 34 pain medicine (anesthesiology) physician records in New Hampshire.
All 34 in New Hampshire → Every provider in Portsmouth → Pain Medicine (Anesthesiology) Physician nationwide →
The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes
- Michael Baker, M.D.Portsmouth, NH 038011114951282
- Jack Chan, MDNewington, NH 038011376170522
- Robert Lehn, MDPortsmouth, NH 038011386971901
- Jung Kim, M.D.Dover, NH 038201366839896
- Tennison MalcolmDover, NH 038201447670468
- James McKenna, MDDover, NH 038201114904554
- Dennis Thapa, M.D.Dover, NH 038201013259175
- Thomas ZoukiDover, NH 038201346624608
Common questions
What is Joshua L. Greenspan, M.D.'s NPI number?
Joshua L. Greenspan, M.D.'s National Provider Identifier (NPI) is 1962457218, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joshua L. Greenspan, M.D. located?
The NPPES record lists a practice address at 14 Manchester Square, Portsmouth, NH, 03801. Phone: (603) 766-8500. Providers update this record themselves, so call before visiting.
How can I verify Joshua L. Greenspan, M.D.'s license?
NPPES lists New Hampshire license number 13011, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joshua L. Greenspan, M.D. prescribe under Medicare Part D?
In 2024, Joshua L. Greenspan, M.D. had 2,714 Medicare Part D claims for 227 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. Part D covers Medicare prescriptions only.
What is Joshua L. Greenspan, M.D.'s MIPS final score?
The 2023 MIPS final score is 99.7 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.