Mark Spencer, MD
Anesthesiology Physician · Hartford, CT
Mark Spencer, MD is an anesthesiology physician with a practice address in Hartford, Connecticut, and NPI 1508818097, issued on May 16, 2006. Check the license (Connecticut 033719, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mark Spencer
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 033719 CT
Self-reported in NPPES; status is on the state search - Practice location
- 114 Woodland St, Hartford, CT 06105
- Phone
- (860) 714-6654
- Enumerated
- May 16, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (860) 714-8110
- Medicare enrollment
- Enrolled (PECOS I20110418000853); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 797 in Connecticut → Look up another NPI →
Also registered at 114 Woodland St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Louisa Acca, PA-CPhysician Assistant1679265458
- Asad Akbar, DPMPodiatrist1851978258
- Yahya Al-Mezrakchi, MDHospitalist Physician1932594603
- Nicole Alex, APRNNurse Practitioner1497424527
Verify Mark Spencer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 033719Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average anesthesiology physician in 2024
164 Medicare Part D claims for 28 beneficiaries, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D. 81 claims were for opioids.
Most prescribed
- Tramadol Hcl62 claims
- Gabapentin30 claims
- Carisoprodol12 claims
- Hydrocodone-Acetaminophen12 claims
- Methocarbamol11 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: $107.46
5 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 17,774 providers of this specialty with any payment received $669.59 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
- Woodland Anesthesia Associates PCHartford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Spencer among 797 anesthesiology physician records in Connecticut
Mark Spencer, MD is one of 797 anesthesiology physician records with a practice address in Connecticut. 76% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 54% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1991 · median 2006 among the 550 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
114 anesthesiology physician records list a practice address in Hartford
They are 114 of the 6,317 NPPES records with a practice address in Hartford, and 797 anesthesiology physician records in Connecticut.
All 797 in Connecticut → Every provider in Hartford → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- John Barnett, MDHartford, CT 061051831140516
- Gregory Cheron, MDHartford, CT 061051578514782
- Katarina Curtis, MDHartford, CT 061051710939053
- Phillip Dennen, MDHartford, CT 061051003867649
- Mark Gerber, MDHartford, CT 061051598716318
- Kenneth Gutierrez, MDHartford, CT 061051730130774
- Qassem Kishawi, MDHartford, CT 061051346290095
- Gwendolyn Moraski, MDHartford, CT 061051417908674
Common questions
What is Mark Spencer, MD's NPI number?
Mark Spencer, MD's National Provider Identifier (NPI) is 1508818097, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Spencer, MD located?
The NPPES record lists a practice address at 114 Woodland St, Hartford, CT, 06105. Phone: (860) 714-6654. Providers update this record themselves, so call before visiting.
How can I verify Mark Spencer, MD's license?
NPPES lists Connecticut license number 033719, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Spencer, MD prescribe under Medicare Part D?
In 2024, Mark Spencer, MD had 164 Medicare Part D claims for 28 beneficiaries; the average among anesthesiology physician prescribers was 402. 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.