Doctor profile · Federal record
Dr. Douglas Summerfield, MD
Critical Care Medicine (Internal Medicine) Physician (CMS: Internal Medicine) · Internal Medicine Physician · Critical Care Medicine (Internal Medicine) Physician · Critical Care Medicine (Internal Medicine) Physician · Mason City, IA
- NPI 1518120633
- Accepts Medicare
- 19 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1000 4Th St Sw
Mason City, IA 504012800
(641) 428-6999
fax (641) 428-6678 - Mailing address
-
621 S Illinois Ave Ste 103
Mason City, IA 504015489
Credentials & registration
- NPI registered
- July 2008 — 18 yrs on file
- Profile last updated
- May 30, 2023
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207RC0200X — NUCC code
- State licenses (4)
- Iowa #41014 · Virginia #0101246408 · Minnesota #54611 · Minnesota #105450
- Medicaid (2)
- NC #5915367 · VA #1518120633
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1518120633. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
792
Distinct HCPCS
9
Medicare allowed
$117,872
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 374 | 204 | $198 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 260 | 153 | $111 | |
36556 |
Insertion of non-tunneled central venous tube for infusion (5 years or older) | 55 | 53 | $77 | |
31500 |
Emergent insertion of breathing tube into windpipe using an endoscope | 24 | 22 | $129 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 21 | 19 | $74 | |
31645 |
Aspiration of initial secretion of lung airway using an endoscope | 16 | 15 | $130 | |
36620 |
Insertion of artery tube for blood sampling or infusion through skin | 15 | 14 | $41 | |
99238 |
Hospital discharge day management, 30 minutes or less | 14 | 14 | $75 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 13 | 13 | $162 |
In context: peer comparison
Among 1 peers in Mason City Critical Care Medicine (Internal Medicine) Physician, average services per provider: 88. This provider delivers 9.0× the peer median.Frequently asked questions
What is Dr. Douglas Summerfield's medical specialty?
Dr. Douglas Summerfield practices Critical Care Medicine (Internal Medicine) Physician in Mason City, IA.
Where does Dr. Douglas Summerfield practice?
Dr. Douglas Summerfield practices at 1000 4Th St Sw, Mason City, IA 504012800. Office phone: 6414286999.
What is Dr. Douglas Summerfield's NPI?
Dr. Douglas Summerfield's National Provider Identifier (NPI) is 1518120633, issued by NPPES.
Does Dr. Douglas Summerfield accept Medicare assignment?
Yes. Dr. Douglas Summerfield accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Douglas Summerfield commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Insertion of non-tunneled central venous tube for infusion (5 years or older) (HCPCS 36556). Source: CMS Medicare Physician & Other Practitioners file.